The behaviors of pursuing luck have been widely existing in a great many aspects of human social life from the past to the present, among them many manifested as consumer behaviors, and can be explained by the theoretical achievements regarding the effects of perception of luck on consumer behaviors. However, few extant studies systematically reviewed the relevant literature, to some extent which has restricted research efforts and marketing practices in this area. In this paper, we summarized five categories of consumer behaviors: risk-taking, uniqueness seeking, contagion effects, attitude towards product with luck meaning, lucky consumption. Furthermore, we pointed out theoretical explanations which from various perspectives uncover the linkage and reasoning behind the perception of luck and consumer behavior: attribution theory, personality trait theory, cognitive priming theory, the theory of counterfactual thinking, social comparison theory, the theory of locus of control and heuristics theory. To start with, by the lens of attribution theory, luck is viewed as an external and unstable factor that determines personal success. Comparing to attribution theory, the theory of personality trait attaches more attention to the internal and stable aspect of perception of luck and holds that the influence of perception of luck can be unchanged over time and situation, if people believe that they possess lucky disposition or lucky characteristics. Thirdly, the theory of cognitive priming admits the long-term accessibility of perception of luck in individuals, it also underlines the activation of perception of luck by situational factors. Additionally, both counterfactual thinking and social comparison emphasize the role of "comparison", but the difference lies in the objects of comparison: counterfactual thinking proposes that the perception of luck comes from the comparison of results of before and after an event. Contrarily, social comparison theory posits that the perception of luck arises from the downward comparison of self and others in a society. This comparison can produce a self-enhancing effect, and affect consumers' behavior in subsequent purchase. Finally, the common point of locus of control theory and heuristics is that both of them place weighs on the influence of lucky perception on consumer decision, especially when the external environment is highly uncertain. Nevertheless, the difference is yet very distinct. Specifically, the former focuses on the role of perception of luck played to compensate the sense of control. It holds that, in order to gain illusion of control to a highly involved thing, people are more likely to purchase lucky products. The later, however, believes that luck is applied as a shortcut for decision-making of a purchase, the more complex the situation, the more likely consumers are to simplify their decisions through heuristics. In the final part of the paper, we give three suggestions to the further research: to deepen the mechanism of perception of lucky, to expand the boundary conditions, and to examine both the advantages and disadvantages of luck consumption. Specifically, other theories might be inspiring to understand the relationships between the perception of luck and some certain consumer behaviors, such as coping theory and cognitive processing theory. Furthermore, the possible moderator variables might be worth to notice——social norm, impression management, usage scenario of product, and product types. At last, including advantages of luck consumption, another two types of consequence research also are promising: the disadvantages of luck consumption and the tradeoff between positive and negative results set off by perception of luck.

Over the past three decades, the conservation of resources theory (COR) has become one of the most widely applied theories in organizational behavior (OB).
Hobfoll (1989) proposed COR as a new attempt at conceptualizing the stressor-strain relationship. It highlights that stress is not construed by individual perception but a reaction to objective stressful circumstances; coping in reaction to stress is a dynamic process of exchanging resources between individuals and the environment. Imprinted by Hobfoll's background as a clinical psychologist studying stress disorder, COR is recognized as a resource-oriented stress model with environmental roots After several major revisions, COR has developed from a stressor-strain model into a motivational theory and built a theoretical framework with several extensions. The dynamic process regarding how people strive to acquire, protect, and build resources helps to explain individual behaviors in reactions to stressors across many organizational contexts. COR also shed light upon how organizations cope with stress.
From 1989 to 2020, OB literature has accounted for most citations of the 1989 paper that initially introduced COR theory. A great number of empirical studies in the OB field, covering a variety of themes such as job stress, work engagement, creativity, and leadership, investigated the major propositions in COR. These propositions include resource loss and gain spirals, salience of resource gain in the process of resource loss, and more. As a result, COR has become one of the most influential theories for understanding employees' psychological processes and behavioral motivation. However, OB scholars share concerns about COR that the concept of resource is fuzzily defined and therefore that nearly anything good can be considered a resource. We acknowledge the substantive value of COR in OB literature though it may not sound novel, but we also recommend OB scholars be conscious with its conceptualization while applying COR and not take the value of applying it by granted because of its high citations.
Applying COR in OB research also faces challenges from other theoretical perspectives. For example, the stress-appraisal theory and the adaption theory provide some contrasting viewpoints on stress. Its origin in clinical psychology also invites problems for OB scholars that they tend to ignore the integrative perspective of COR regarding how the sources of stress and the structure of individual resources evolve in a dynamic process.
We propose that OB researchers should avoid tailoring COR's propositions to OB research questions, which often means neglecting its overarching perspective and purposely selecting isolated viewpoints to serve their own research questions, but try to seek balance between the integrative perspective in COR theory and the behavior-focused tradition in OB research in the future.

Punishment has two sides, the “prosocial” side (altruistic punishment) and the “antisocial” side (antisocial punishment). Antisocial punishment is widespread in human society and seriously undermines cooperation, but it is ignored by researchers because it is difficult to observe and quantify, and does not have a positive effect similar to altruistic punishment. In this article, we systematically reviewed, analyzed, and evaluated the literature in this field; and put forward research prospects and theoretical hypotheses based on the concept and research paradigms of anti-social punishment, influencing factors, and theory hypotheses of production mechanism.
First of all, combined with the diversified performance of anti-social punishment in the field of non-economic games, the classical concept of anti-social punishment is extended, and defined as: the phenomenon that the game participants implements economic punishment(with monetary cost), negative evaluation, or exclusion and suppression on others who exhibit high contributions or cooperation of prosocial behavior.
Moreover, we sorted out the corresponding research paradigms and influencing factors; as a complex social behavior, antisocial punishment is affected by a variety of individual and environmental factors. Individual factors include both physical and psychological aspects. Testosterone, social cognition, subjective willingness, the role of the intuitive system, working memory, mental illness, and Dark Triad personality traits all have an impact on antisocial punishment. There are three main aspects in environmental factors, including task contextual factors (i.e., cost-to-impact ratio, information availability, and situational competitiveness), group factors (i.e., differences between internal and external groups, group decision-making, and individual decision-making, etc.), and sociocultural and developmental factors (i.e., social culture and social development level).
Furthermore, five hypotheses of the production mechanism of antisocial punishment were summarized as follows: (i) the aggression hypothesis regards antisocial punishment as an aggressive behavior, which is derived from malicious motivation or internal negative traits of an individual; (ii) the revenge hypothesis holds that antisocial punishment is a behavioral response based on tit-for-tat strategy, which occurs when individuals themselves are punished by others; (iii) the social comparison hypothesis suggests that antisocial punishment is a defense against threats to reputation and self-concept; (iv) deviant group norm hypothesis holds that antisocial punishment is the maintenance of group norms; (v) the evolutionary strategy hypothesis, based on the perspective of evolutionary psychology, holds that antisocial punishment is a dominant strategy beneficial to individuals and groups, and a way to gain advantages. All the above hypotheses are partial and incomplete claims. By combining the social information processing theories with the dual-process theories of decision-making, we further proposed the dual-process model of antisocial punishment. We deem that antisocial punishment is the result of an individual's further processing and interpretation of social cues, interpersonal interaction, and emotional experience, which is based on one's own internal factors; for different individuals and situations, the deliberative processing system and affective processing system are activated respectively to further dominate decision-making behavior.
Finally, the research prospects were put forward from five aspects. (i) Further clarify the concept and measurement indicators. (ii) Further innovate research methods, such as developing real-life decision scenario simulation tasks with more ecological validity, and developing implicit association tests. (iii) Expand studies of influencing factors. Specifically, further explore the impacts of demographic variables, interpersonal factors, and Chinese native culture on antisocial punishment. (iv) Further clarify the mechanism of antisocial punishment from the level of neuroscience, construct the psychological model to explain the mechanism of antisocial punishment and verify its effectiveness. (v) Conduct targeted intervention research.

From the perspective of evolutionary psychology, sexual selection played important roles in the evolution of human psychology and behavioral phenotype. For example, studies showed that both risking behavior in males and prosocial behavior in females were partly shaped by sexual selection. However, the influence of sexual selection on females' food choice has not been given much attention or systematically examined. As we know, food choice plays an important role in body shaping. Body mass is directly related to intake of high-fat food. To lose weight or shape body figure, many females look to dieting and healthy food intake. Also, females' body mass and body shape are related to health and reproductive value. All the evidence suggest that food choice might be strongly selected by sexual selection in females.
To systematically explore the role of sexual selection in female food choice, two kinds of studies would help. The first kind of study is to experimentally manipulate mating motive and then record the change of food choice in females. This kind of study makes us possible to understand the causal relationship between mating-related cues and female food choice, which helps understand the role of sexual selection in female food choice. Theoretically, the salience of mating motive would make both males and females show signals that enhance their attractiveness in the eyes of the opposite sex. Since a low BMI and an attractive body shape are essential indexes of body attractiveness as well as signals of females' reproductive value, and food choice contributes to fluctuation of BMIs and body shaping, it is not hard to speculate that priming of mating motive would cause an effect on female food choice. Meanwhile, we should diversify methods used to manipulate mating motive and explore the types of food that might be influenced by mating motive, so as to have a better understanding of the relationship between mating motive and female food choice. The second kind of study relies on examination of the fluctuation of female food choice across menstrual cycle. Female menstrual cycle is largely shaped by sexual selection and is accompanied by fluctuation of hormones such as estrogen and estradiol, which means relevant studies would contribute to understanding the neurobiological mechanisms underlying the link between sexual selection and female food choice. However, the neurobiological basis of the relation between menstrual cycle and food preference has seldom been explored. Besides, sex hormones are regulated by human brain. Examining the brain substrates underpinning the above relation would be invaluable for further understanding the mechanisms involved. Also, human brain might interact with sex hormones in affecting the relation between female menstrual cycle and food choice.
In future studies, we need to examine the role of sexual selection in female food choice from different perspectives and explore the moderating roles of other psychological components in the relationship between mating motive, menstrual cycle and female food choice. For example, previous studies have showed that dinning environment, affective state, cognitive and social factors all contribute to food choice in females. The above factors might interact with mating motive and menstrual cycle to cause an effect on female food choice. Moreover, oxytocin and vasopressin are also neuropeptides that play important roles in maintenance of intimate relationship. Future studies need to explore whether these two neuropeptides also play roles in female food choice as well as potential interacting effects involved. Owing to the difficulty of directly unveiling the dynamics of sexual selection, we have to look to some indirect evidence to understand the true nature of the roles of sexual selection in female food choice. Meanwhile, a brain-hormone-behavior framework would help a lot to systematically understand the role of sexual selection in female food choice.

Different from actual affect, ideal affect refers to the emotions that people desire to have (Tsai, 2007). For example, while some individuals want to feel calmness, others want to feel enthusiasm. Affect valuation theory (AVT) differentiates two types of affective experiences, namely ideal affect and actual affect (Tsai, 2007). Actual affect is shaped mainly by temperament, whereas ideal affect is shaped mainly by cultural factors.
Previous cross-cultural research (e.g., Bencharit et al., 2019) found that compared with Americans who want to feel high arousal positive (HAP) affective states (e.g., excitement), Chinese people want to feel low arousal positive (LAP) affective states (e.g., calmness).
Culture shapes ideal affect mainly through cultural exposure, cultural values, and social cultural changes. Specifically, previous research demonstrated that ideal affect, which is emphasized by culture, can be demonstrated in cultural products (e.g., storybooks). Experiencing these cultural products can therefore shape one's ideal affect (Tsai et al., 2007). With reference to Schwartz's (1992) basic human value system, two cultural values—namely self-enhancement (including achievement and power) and openness to change (including self-direction and stimulation)—can account for Americans' preference for HAP, whereas conservatism (including tradition and conformity) can account for Chinese people's preference for LAP. In addition, social cultural change, such as a significant national event (e.g., the 9/11 attack in the U.S.), can explain changes in one's ideal affect (Tsai, 2013).
Ideal affect also has culturally diverse influences on one's preference and choice behaviors, mixed emotional experiences, physical and mental health, and social judgment. Specifically, people tend to make choices based on their ideal affect, which is encouraged by their culture (Sims et al., 2017). Ideal affect can also explain the cultural differences in mixed emotional experiences (Sims et al., 2015). People may attain healthy mental and physical states if their own ideal affect is consistent with the ideal affect that is emphasized in their culture (Tran et al., 2017). In interpersonal interaction, people prefer social partners who display the types of emotions that match their own ideal affect (Tran et al., 2017).
Four future directions can be drawn for this line of research. First, ideal affect should be investigated from a longitudinal perspective. To further understand how culture shapes ideal affect, it is necessary to use longitudinal research methods to examine the impacts of cultural changes on ideal affect. For example, future research could explore whether changes in Chinese values would influence the types of ideal affect valued by Chinese people. Second, antecedents of ideal affect could be investigated. In addition to the shaping effect of cultural values on ideal affect, another important cultural factor, holistic-analytic cognition (Nisbett et al., 2001), may also account for the cultural variations in ideal affect. The individual-level cultural factors (e.g., gender role or social class) may explain the individual differences in ideal affect. Third, future researchers should develop the criteria for mental health assessment that is suitable for Chinese culture. Future research could further examine the roles of calmness and harmony in Chinese people's mental health. Fourth, it is necessary to reduce cultural misunderstandings by increasing the awareness of ideal affect. If people are aware of the ideal affect that is emphasized in their culture, then adjust their daily life to match this ideal affect, they may avoid social exclusion or financial losses due to the failure in “ideal affect match”. Moreover, people could reduce their biased choices by realizing the impact of ideal affect on their social cognition judgments.

The effect of social media on executive functions remain controversial. Some studies have shown that the use of social media promotes an individual's executive functions, and some studies have found that social media use has a negative impact on executive functions. Recent studies have shown that, there may be an inverted U-shaped relationship between social media use and individual's executive function, and that social media use does not necessarily impair or promote executive function, but there is an optimal tipping point between the two. Moderate-intensity use of social media is the best level to promote executive functions. This is related to the moderating role played by the intensity of use. The paper first introduces the behavioral evidence that the effect of social media on executive functions, including three parts: positive effects, negative effects, and inverted U-shaped relationships. Secondly, it analyzes the moderating effect of intensity of use in the inverted U-shaped relationship between social media use and executive functions, and attempt to reveal the debate over the pros and cons of social media use on executive functions. Moderate-intensity use of social media will produce a social media flow experience, allowing individuals to filter out various distracting information when faced with various complex information stimuli in social media, focusing on useful information, and target information is constantly being affected. With storage and update, the individual's executive functions (especially the shifting function) get long-term and repeated exercise under such requirements, and finally improve. In addition, the flow experience generated by the use of social media can be used as an intrinsic motivation to increase the interaction of social networks to make positive changes in interpersonal relationships. This provides individuals with continuous social rewards and emotional support. To a certain extent, it buffers the negative impact of excessive use of social media on cognitive function, and slows down the decline of age-related executive functions. However, high-intensity use of social media causes individuals to worry about their performance in the task, which tends to maintain a wider range of attention and is more susceptible to interference from irrelevant information, while low-intensity use of social media causes individuals to be in a state of lack of proactiveness, the psychological effort process of information processing is reduced or even disappeared, which has a negative impact on executive functions.
Future research in this area should examine the dose-effect of social media use affecting executive functions. The positive impact of social media use on the executive function may require a relatively long and continuous process of using social media. Whether an optimal social media can be determined the level of media usage maximizes individual's executive functions? In addition, previous research mainly focuses on the impact of social media usage frequency on individual's executive functions in daily life, but lacks a single sub-component of the type of social media usage on the executive function investigation of development and changes. In the future, the relationship between different types of social media usage and sub-components of executive function should be further clarified. Finally, the lifting effect of social media may be more significant in groups whose brain structure is in a period of change. Most previous studies only show that the use of social media can change individual's neural pathways or brain response patterns (and little is known about whether changes in the physiological structure of executive function have an impact on the cognitive level of social media users. Future research should combine behavioral and cognitive neurological methods to examine the brain regions of social media users with different cognitive levels in performing specific tasks. The difference in activation makes the neural mechanism of social media use affecting executive function more precise and comprehensive.

As an essential timing factor, ambient light plays a vital role in synchronizing internal biological rhythms with external lighting and dark environments. Meanwhile, ambient light is also a critical mood regulator; its non-image-forming (NIF) effects on mood are especially concerned by researchers. Previous studies have demonstrated that illuminance, correlated color temperature (CCT), and wavelength of ambient illuminance are key physical factors affecting mood. Moreover, unusual lighting patterns such as short lighting periods, artificial lighting during the night, and constant lighting/darkness have destructive effects on emotion and mood that may induce affective disorders such as depression and anxiety.
To date, the conclusion that short-time light affects emotion is not quite consistent. Studies have found that the NIF effects of short-term light on mood was not only affected by the intensity and spectrum of light, but also modulated by exposure duration, timing, individual characteristics, subjective preferences, and gene types. In a period of time, the longer the subjects received bright light exposure and the earlier they received morning light exposure, the lower their depression score. However, in the short-term lighting experiment of simulating office lighting, prolonged exposure of bright light was not conducive to individuals' subjective emotional experience; while the positive effect of CCT on emotion may depend on prolonged exposure. It is worth noting that receiving light exposure at different time in a day can advance or delay the circadian rhythms; thus, the timing could also regulate light's emotional function. In addition, women were found to prefer higher illuminance and lower CCT than men; while young subjects were more sensitive to polychromatic light with shorter wavelength than older subjects. Compared with individuals with PER3^4/4 genotype, individuals with PER3^5/5 genotype were more sensitive to light exposure and had a higher risk of depression; the 5-HTTLPR polymorphism was also proved to regulate the effect of light on the functional connectivity of the prefrontal cortex in healthy subjects. Lastly, the mechanisms by which light affects mood are shown from two aspects. On the one hand, the intrinsically photosensitive retinal ganglion cells may project light signals to the brain areas responsible for emotion regulation. On the other hand, ambient light may affect mood by altering circadian rhythms, regulating hormone secretion, neurotransmission, and sleep.
Future research can employ neuroscience technology to simultaneously examine the changes of subjective emotional experience and objective neural activity under multi-levels of illuminance and CCT; and combine multimodal data such as subjective rating, behavioral measurement, physiological response, and neural activity to track the effects of ambient light on mood. Besides, except for the NIF of light, ambient light may convey specific emotional meanings via the visual system, thus leading to various visual experiences transmitted by illuminance or wavelength, or lighting mode (direct or indirect lighting). Therefore, whether the visual perception of light, dominated by rods and cones, also potentially contributes to light's emotional function and how to separate it from the non-visual effects could be a promising direction in future research.

Depression is a major problem in the modern society. The pathogenesis of depression is a research hotspot in the field of neuroscience. The proved mechanisms of depression include monoamine neurotransmitter hypothesis, gene-environment interaction, neurogenesis, neuroplasticity, immune activation and suppression, etc. With the deepening of research, the roles of "brain-gut interaction", "muscle-brain crosstalk", and adipocytokines in the sports antidepressant field has been discovered. As an endocrine organ, the role of bone tissue in anti-depressive exercise remains to be revealed. Based on this, this research innovatively explores the biological effects and mechanisms of uncarboxylated osteocalcin (ucOCN) in exercise anti-depression from the perspective of “bone-brain crosstalk”, and further reveals the relationship between bone endocrine activity and the molecular regulation of sports antidepressant. ucOCN is a specific non-collagen protein secreted by osteoblasts (OB). After entering the blood, it acts on the hippocampus, cingulate gyrus and other brain tissues, and triggers a cascade reaction through targeting cell membrane receptors to regulate neurodevelopment, neuroplasticity and bone endocrine-nerve response system. Exercise promotes the secretion of ucOCN and has a significant antidepressant effect, but there are few studies focusing on the molecular mechanism. Based on integrated biological theory and bone endocrine function, through analysis of current research, we found several mechanisms by which ucOCN mediating exercise antidepressant. Firstly, ucOCN regulates neurotransmitters expression: exercise induces high expression of ucOCN which inhibits γ-amino groups butyric acid (GABA) expression to improve depression-like behavior. Secondly, ucOCN regulates neuroendocrine secretion: ucOCN activates the HPA axis to promote adrenocorticotropic hormone (ACTH), mineralocorticoid, cortisol and other secretions to improve depression-like behavior. In addition, ucOCN also activates G protein-coupled receptors 158 (Gpr158)/brain-derived neurotrophic factor (BDNF) pathway to promote neurotransmitter secretion and further regulate depression occurring. Thirdly, ucOCN regulates neuroimmunity: ucOCN activates the ERK and STAT pathways and down-regulates the expression of IL-6 and IL-8 in the hippocampus, and then through malondialdehyde (MDA)/super up-regulation of superoxide dismutase (SOD)/nuclear factor erythroid-derived 2-like 2(Nrf2)/heme oxygenase 1(HO1) pathway to increase expression of VGF and BDNF, which further improve depression-like behaviors. Taken together, these results provide a solid theoretical basis for the mechanism of ucOCN in sports anti-depression. We also provides new research directions and ideas for sports anti-depression, and provide a new perspective for enriching the biological mechanism network of sports brain.

Fear is a biologically adaptive response to environmental threats, and fear learning plays a key role in adaptive function. However, maladaptive fear learning underlies emotional disorders, such as anxiety and posttraumatic stress disorder (PTSD). Together with the development of cognitive neuroscience and the integration of multidisciplinary research, the study on the cognitive neural mechanism of fear has become a hot topic in the field of emotion. Using the classical fear conditioning paradigm, researchers have identified the brain circuits of fear learning and extinction. Specifically, extensive imaging researches have revealed several key regions involved in fear acquisition, including the amygdala, insula, dorsal anterior cingulate (dACC) and thalamus. Moreover, the amygdala, hippocampus and ventromedial prefrontal cortex (vmPFC) served key roles in fear memory consolidation and reconsolidation, and the amygdala, hippocampus, vmPFC, and dACC are required for fear extinction. Cumulative evidence has suggested that oxytocin plays a crucial role in the process of fear acquisition, fear consolidation and fear extinction. Therefore, firstly, we summarized the paradigms of fear acquisition and fear extinction as well as the cognitive neural mechanisms of fear acquisition and fear extinction based on the fingdings of corresponding meta-analyses. Secondly, we focused on the cognitive neural mechanisms underlying the impact of oxytocin on fear acquisition and fear extinction. Next, we summarized the neurobiological circuits of oxytocin influence on fear emotion processing. Finally, we prospected the future researches on the cognitive neural mechanisms underlying the impact of oxytocin on fear processing. The present study sheds insights into the cognitive neural mechanisms underlying the impact of oxytocin on fear processing. Moreover, the present study provides an potential treatment for the fear-related disorders.
Oxytocin has been shown to facilitate fear acquisition as it affects brain activity in several regions including amygdala, prefrontal cortex, anterior cingulate gyrus, insula and hippocampus, as well as the functional connectivity between them. Oxytocin also enhances fear extinction by regulating amygdala and medial prefrontal cortex activity, as well as enhancing the functional connectivity between prefrontal cortex and amygdala. Furthermore, oxytocin can regulate the activity of the amygdala, anterior cingulate gyrus, insula, hippocampus, vmPFC and other fear-related brain regions, thus affecting the processes of fear acquisition and extinction. Specifically, cumulative evidence has indicated that intranasal oxytocin attenuates amygdala (hyper)activity and enhances functional coupling of the amygdala with the vmPFC and hippocampus, resulting in increased top-down control over the fear response. In addition, intranasal oxytocin has also been found to attenuate amygdala—brainstem connectivity and to change activity and connectivity in nodes of the salience network (i.e., insula and dACC). Furthermore, oxytocin administration may enhance social behavior through modulating the hypothalamus—pituitary—adrenal (HPA) axis and autonomic nervous system (ANS) function, which may provide a potential treatment for the fear-related disorders. However, it should be noted that the dose, time and location of oxytocin injection might have different effects on the processes of fear acquisition and extinction.
Future studies should focus on gender differences, neural network underlying the impact of oxytocin on fear consolidation and reconsolidation and the pathological study examining oxytocin effect on fear emotion processing to better reveal the cognitive neural mechanisms underlying the impact of oxytocin on.

Shared and private aesthetic tastes represent universal and idiosyncratic aesthetic processing, respectively. The new trending that combines both aesthetic tastes are challenging pre-existing “universal” aesthetic principles. Previous research focused mainly on whether aesthetic principles were statistically universal, neglecting the fact that aesthetic attributes can cause different reactions among individuals. This contradictory relationship between generality and particularity concerns one long-standing but essential topic in aesthetics: is beauty universal and objective or idiosyncratic and highly subjective? If an aesthetic principle is only based on the average aesthetic judgment and is able to ignore the differences of aesthetic experience among individuals, can such an aesthetic principle support the proposition that "beauty is universal"? This is a reflection on empirical aesthetics brought by research on aesthetic tastes. Therefore, if private taste does play a role in aesthetic tastes, then there's no doubt that future studies on empirical aesthetics will have to take into consideration both dependent variables: the average aesthetic reactions and the extent to which such aesthetic reactions differ among individuals. Recent studies on aesthetic tastes have revealed many factors that can modulate the relative weights between shared and private tastes, the most typical of which is stimulus domain. Studies have shown that the proportion of shared taste in artificial stimuli (such as architecture and art) is less than that in natural stimuli (such as faces and landscapes). Other studies further demonstrated that high-level object categories (e.g., faces vs landscapes) can override aesthetic principles based on low-level stimulus features (e.g., symmetry). Besides stimulus domain, other factors, including expertise, cultural backgrounds, previous experience and age, can affect the relative weights between shared and private tastes. Recent fMRI and EEG studies have explored the neural mechanisms of shared and private aesthetic tastes, the basis of which includes sensory pathways and the reward system. Similar sensory “impressions” among individuals triggered by the same aesthetic stimuli may be the prerequisite that aesthetic responses share some commonality among individuals. Meanwhile, the reward system, especially medial orbitofrontal cortex(mOFC), shows homologous activation patterns across different stimulus domains. Therefore, both sensory pathways and the reward system might be the neural basis of shared aesthetic taste. What's more, studies found that default-mode network (DMN) are suppressed in a task requiring external focus, and are engaged in tasks requiring internally directed thought, such as autobiographical memory and autistic thinking. Given that DMN is typically activated in self-directed thinking, it is possible that DMN is more related to individual differences in aesthetic responses, and plays a more important role in private aesthetic tastes. Furthermore, take example for the PIA model and the VIMAP model, contemporary aesthetic processing models still owe an explanation for aesthetic tastes. And it is yet to clear how different aesthetic processing stages lead to changes in relative weights between shared and private tastes. Two completely opposite predictions and explanations can be reached by these models. The first one is that early stages in aesthetic models are driven more by stimuli, thus leading to more homogeneity in aesthetic responses and greater proportion of shared taste due to the objectivity of stimulus characteristics; in contrast, late aesthetic stages are driven more by perceivers, leading to more proportion of private taste. The other one also makes some sense: in stimulus-driven stages, the general “gist” formed by different perceivers can also be heterogeneous because at these stages individuals process the stimuli incompletely and insufficiently. However, in perceiver-driven stages, individuals process stimuli more intactly and sufficiently, thus it is possible that in these stages perceivers have more similar impressions of the targeted stimuli, resulting in higher proportions of shared taste. In the future, more relevant studies are required to expand stimulus domain of aesthetic evaluation and to explore the corresponding relationship between aesthetic tastes and different aesthetic processing stages.

Developmental dyslexia (hereafter referred as "dyslexia") will not only affect the lifelong development of individuals but also impose an additional financial burden on society. Digging into the relevant neural mechanisms contributes to the early prediction and intervention of dyslexia. Established models of the neural bases of dyslexia primarily focused on the cerebrum. In recent years, extensive studies have shown that dyslexia is also associated with cerebellar abnormalities. However, it remains unclear about the relationships between the two.
By summarizing recent findings, we found that the cerebellum could play multiple roles in reading. First, it could influence reading in different ways. Cerebellar dysfunctions could impair reading by affecting motor or motor-related skills (such as oculomotor control, automatization, or articulation), or by disturbing linguistic-related processes (such as phonological or semantic processing). Second, different subtypes of dyslexia are associated with abnormalities in distinct cerebellar regions. For example, dyslexic readers with automatization deficits showed abnormal neural activities in the anterior parts of the cerebellum, which were responsible for motor processing, whereas dyslexic readers suffering from visual and phonological deficits were associated with the abnormalities in the gray matter volume of the posterolateral areas of the cerebellum, which were mainly responsible for high-level cognitive processing. These results indicate that the relationship between dyslexia and the cerebellum is not unitary. There may exist multiple cerebellar areas being targeted by dyslexia, which also contribute differently to reading.
The causal relationships between cerebellar abnormalities and dyslexia might be bi-directional. Previous literature found that structural deficits in the posterolateral parts of the cerebellum were only associated with dyslexia compared to other development disorders (i.e., ADHD, autism) that may coexist with dyslexia. This result suggests that neural abnormalities in these areas were due to deficits in reading abilities rather than other comorbidities. Additionally, these regions vary in their causal relationships with dyslexia. For example, activation in the anterior parts of the right lobule VI, responsible for motor processing, showed greater activation or functional connectivity with the cerebrum in dyslexic readers compared to normal readers. These increased neural activities may be the compensatory mechanisms of dyslexia and a by-product of reading difficulties. In contrast, neural activities of the cerebellar areas responsible for linguistic processing (i.e., the right lobule VII) could predict future reading abilities, indicating that the functional state of the cerebellum in early developmental stages may influence reading development. Moreover, functional deactivations in the cerebellar linguistic areas have been observed in preschool readers with a high risk of dyslexia, suggesting that cerebellar abnormalities have occurred before formal reading instruction. These results jointly support that cerebellar abnormalities may be the cause of dyslexia.
The results mentioned above illustrate that the cerebellum is more than a reading-related hub. There could be multiple cerebellar regions that are engaged in reading, with different regions supporting different cognitive processes and having distinct causal relationships with dyslexia. Accordingly, we introduced the "cerebro-cerebellar mapping hypothesis of word reading", which proposed that reading-related regions in the cerebellum map to their functional correspondence areas in the cerebrum. Regions with the same functions across the cerebrum and cerebellum synchronized in neural activities and collaborated during reading. Dysfunctions of this collaboration may lead to dyslexia. This new framework aims to reveal the relationship between reading, the cerebellum, and the cerebrum from a new perspective, and offers important insights into the neural mechanism of dyslexia and the role of the cerebellum in high-level cognitive processing.

The word frequency effect refers to the phenomenon of processing high-frequency words faster and more accurately than processing low-frequency words in language production. As the age increases in adulthood, the word frequency effect will also change. The Transmission Deficit Hypothesis suggests that ageing weakens the connection between the stored language information nodes, and the word frequency effect increases further. In contrast, according to the Rank Frequency Account, the relative word frequency and the word frequency effect remain unchanged; thus, it can be deduced that ageing does not change the word frequency effect. Furthermore, the Logogen Model assumes that the word frequency decreases with an increase in experience and contact, thereby predicting a reduction of the word frequency effect as the age increases.
There are differences in the age-related word frequency effect in language production. Numerous studies have demonstrated that the word frequency effect among the elder is greater than that among the young. However, some studies have shown that elderly people have less or no difference in the word frequency effect in comparison with young people, suggesting that the differences in the word frequency effect depending on age may be caused by differences in tasks, stimuli, and individual cognitive abilities. However, the word frequency effect is relatively stable throughout the life cycle. More precisely, it is more difficult to name low-frequency words than high-frequency words for both the young and the elder. There is an age difference between the young and the elder in processing low-frequency words. Compared with the elder, the younger people have higher accuracy and higher activation levels in language-related brain areas (e.g., insula and middle temporal gyrus) and cognitive control-related brain areas (e.g., cingulate cortex). Moreover, there are differences in the word frequency effect between the verb naming task and the noun naming task. In the action picture naming task, high-frequency words activate specific brain regions, whereas in the object naming task, only low-frequency words activate of specific brain regions.
The word frequency effect may occur in different stages of language production. Previous studies have demonstrated that the word frequency effect may occur in the lemma selection, the connection stage between lemma selection and phonological code retrieval or in the phonological code retrieval in spoken language production. The word frequency effect in writing production appears later than in spoken language production and may occur in the orthographic word form. In addition, there are differences in the time course of the word frequency effect between the younger and older individuals. For the elder, with an increase in age a decline in general cognitive ability, the time course of the word frequency effect is slightly delayed when compared with the young.
Some studies also explored the change in the word frequency effect in patients with degenerative diseases, suggesting that it can be used as a sensitive indicator for early detection and diagnosis of related diseases. The word frequency effect and the acquisition age effect both impact on the word processing, however, during different stages. The acquisition age affects the visual and semantic processing of the vocabulary, whereas the word frequency effect merely acts on vocabulary retrieval. In the future, we can further distinguish the influence of word frequency effect from the age of acquisition effect on ageing effect of language production, and extend the studies to patients with neurodegenerative diseases.

Touch is an important sensory channel for individuals to explore the external world in everyday life. The sense of touch helps us to discriminate the location of a stimulus on the skin surface, to identify the shape, size and texture of objects. However, touch can also be affective. The motivational-affective dimension of touch is involved in coding its valence and motivational relevance. This aspect of tactile sensation plays an important role in maintaining social bonding and promoting interpersonal communication.
The affective function of interpersonal touch can be achieved through unimodal presentations or multimodal information integration processing. That is, tactile action itself, either a strong handshake or a tender hug, can directly convey emotions. Although the accuracy of decoding six basic emotions (anger, fear, happiness, sadness, disgust, and surprise) from interpersonal touch are slightly less than from the facial expression and vocal information, interpersonal touch has advantages in conveying social emotions such as "love", "gratitude" and "sympathy". Such advantages reflect the important significance of affective touch in establishing social bonding and promoting cooperative relationships. Further more, the affective meaning and social attributes carried by interpersonal touch can provide social background for emotion of other modal （e.g., visual or auditory） information processing, so as to enhance participants' attention and to sharpen their social evaluation of emotional cues.
Compared with sensory-discriminative subsystem, the motivational-affective subsystem has a special neurophysiological mechanism. For example, C-tactile (CT) afferents are strongly implicated as the neurobiological substrate underlying the affective property of touch. CTs, a class of slowly conducting mechanoreceptors, are specially tuned to the properties of human physical contact. They fire maximally to skin-temperature, light-pressure stroking at a rate of 1-10 cm per s. C-tactile-mediated affective tactile stimulation project in spinothalamic tract (STT) pathway (the spinal signaling of orofacial C-fiber mediated affective touch is still unclear), bypass the primary somatosensory cortex, directly project to the insular cortex, and then process in the amygdala, medial prefrontal cortex (mPFC), posterior superior temporal sulcus (pSTS) and other core areas of the “social brain” neural network. In addition, evidence from EEG research shows that, beta oscillation at parietal scalp sites, may be related to the affective representation of tactile stimuli, and theta oscillation at frontal, parietal, temporal, occipital scalp sites, may reflect an attentional-emotional regulatory mechanism of affective touch.
Another complex facet of touch is that, affective touch would be complicated by its inextricable links to context, gender and sexuality, culture, and other individual, interpersonal, and societal factors. Moreover, learned from the previous research on facial emotion perception, a considerable body of work about affective touch are also around the topic of coding-decoding of basic emotions, so that the results fail to fully reveal the specificity of tactile channel in transmitting social emotions. Therefore, we should pay more attention to top-down contextual factors in the future researches, such as personal relationship, cultural difference, and social context, that may influence how to define and interpret the emotion and motivation of interpersonal touch. Meanwhile, although the time course of emotional touch perception was explored with electrophysiological measures, however no clear index has been identified till now. In addition, in order to reveal the relevance and independence between the sensory-discriminative and motivational-affective subsystems, such as activation likelihood estimate (ALE) meta-analysis and meta-analytic connectivity modeling (MACM) analysis can be used to reveal the cortical functional neuroanatomy supporting a distinction between affective and discriminative touch.

Physiognomy is an important factor in identifying and inferring the individual traits and behaviors. However, its internal mechanism still needs to be further explored. Physiognomy usually refers to individual facial features, mainly including partial features and overall features. The partial features of facial features include the size and shape of the five sense organs, and the thickness of hair, while the overall features of facial features include objective facial width-to-height ratio and subjective facial attractiveness. Based on general cognitive perspective and evolutionary cognitive perspective, then combined with the local and overall features of physiognomy, this paper expounds the process and effect of judging people by physiognomy.
The general cognitive perspective emphasizes that people study the process of cognition from the perspective of information processing, which emphasizes the process of perception. The individual's response to physiognomy is mainly a by-product of the brain's processing of information, which is the processing mechanism for general information. Based on stereotypes, halo effects, status generalization theory, and social information processing theory, scholars use different cognitive processing systems to illustrate the process of getting to know people and their effects. Specifically, local features such as the size and shape of the five sense organs, the thickness of the hair, and overall features such as the facial width-to-height ratio and facial attractiveness can affect individual recognition of traits such as empathy, friendliness, extroversion, self-confidence, narcissism, aggression, dominance and criminological inheritance through different cognitive processing systems. Observers' subsequent behaviors is based on the individual traits' information recognized by the physiognomy. On the one hand, people will judge their income, ability, and social level based on the identified individual traits. On the other hand, these individual traits play an important role in the trust decision-making, the recruitment and promotion decision-making process. All in all, physiognomy affects the recognition of individual traits through various cognitive processing systems, and these traits play important roles in judgment (ability, income, social hierarchy) and decision-making (trust, recruitment, promotion).
Compared with the general cognitive perspective, the evolutionary cognitive perspective emphasizes that in the process of processing information, people will identify which cues are related to health, survival, propagation and adaptation to the environment according to the evolutionary needs. Based on evolutionary theory, evolutionary intrasexual competition theory and the good genes theory, scholars have discussed how to know people and its effect through two different evolutionary selection mechanisms: natural selection and sexual selection. The observer uses the gene as the driving force to identify the observed physiognomy. Observers assessed marital satisfaction, life satisfaction and happiness based on the health and genetic status they identified. In order to meet the needs of evolution and survival, people will choose a mate according to the health and genetic status of the individual identified when observing facial features, combined with the evolutionary law of "survival of the fittest". In conclusion, physiognomy plays an important role in evaluating individual health and genetic status through various evolutionary selection mechanisms, and thus has an important influence on judgment (marriage satisfaction, happiness, life satisfaction) and mate selection decision.
In addition, the effect of physiognomy on individual life depends on the situations and individual traits. The decision situation of the face viewer, the cultural context of the face owner, and the individual traits of the face viewer and the face owner all influence the effect of physiognomy's identification. Future research should investigate the interaction among different physiognomy features, and explore the boundary conditions that influence the effect of facial recognition. Furthermore, it is necessary to improve the external validity of the research through big data analysis, and pay more attention to physiognomy features modified by epigenetics on individuals. It is also important to conduct research within the domestic context. In doing so, it will help enrich physiognomy-related research and build a more systematic physiognomy theory.

Incubation effect refers to the phenomenon that when people are confronted with an unsolvable problem, they temporarily put it aside and switch to complete other irrelevant tasks instead, which is beneficial to the ultimate solution of the original problem. In recent years, researchers have conducted extensive studies on incubation effect of creative thinking and its influences, and put forward many theories to explain incubation effect. The representative theories include “selective forgetting theory”, “spreading activation and cue assimilation theory” and “unconscious work theory”. They explain the mechanism of incubation effect from different perspectives and predict different influences and phenomena respectively. For example, the attention-withdrawal theory supposes that the length of incubation will not influence the incubation effect. And the forgetting-fixation theory recommended a longer break to incubate. Furthermore, some factors are mentioned in many theories, such as the length of incubation and the length of preparation period. So the empirical researches about them can be explained by these related theories. While some factors are only mentioned by a few theories. For example, the function of beneficial cues can only be explained by the opportunistic assimilation theory. However, the research field of incubation effect has begun to combine with mind wandering and sleep. Many of the results of these studies are difficult to be well explained by the above theories, but should be explained in the light of the characteristics of mind wandering and sleep. Until now, related researches of mind wandering and sleep further shed light on the mechanism behind incubation effect. For example, mind wandering increases unconscious associate processing to serve creative problem-solving. Sleep, as a special long period of incubation, may promote problem solving through various mechanisms such as the reconstruction of memory representation and the reactivation of memory. But there is also conflicting evidence as to whether mind wandering and sleep promote the incubation effect. There are many studies that have failed to prove the effect of mind wandering and sleep on creative problem solving. The psychological processes underlying the incubation effect includes at least two cognitive components: the transformation of problem representation and the formation of remote associations. Different brain mechanisms are responsible for these two basic components. During the incubation period, memory systems are regulated by the dorsolateral prefrontal cortex to break the fixation caused by false assumptions. The cooperation of right frontal lobe, temporal lobe and parietal lobe was beneficial to assimilation of beneficial cues. The striatum-hippocampus-prefrontal lobe network continued to catalyze the reconstruction of representations during incubation period. Mind wandering promotes insight through the interaction of the medial temporal lobe, default network and executive network. The research on sleep can reflect the mechanism of long-term incubation in real life, and future research can further investigate the role of different sleep stages and their corresponding brain mechanisms. Future research needs to improve the ecological validity of relevant studies, promote the development of incubation theories, improve reproducibility, explore the positive factors that promote the incubation effect, and pay attention to the relationship between the incubation effect and emotion or other non-cognitive factors.

Aggressive behavior plays an important role in the social, emotional and psychological adjustment of children and adolescents. Children and adolescents with aggressive behavior are prone to violate social moral norms, and even commit crimes in serious cases. It is noted that peer victimization is an important predictor of aggressive behavior. Peer victimization refers to that individuals have experienced attacks by peers, such as physical and verbal victimization, attacks on property and social manipulation. Children and adolescents who have been victimized by peers will characterize the attacker as hostility, which will be generalized to the whole peer group, thus showing more aggressive behavior in future interpersonal communication. Several previous studies have examined the relationship between peer victimization and aggressive behavior in children and adolescents. However, due to differences in research design and inconsistent results, there is still some uncertainty about the relationship between peer victimization and aggressive behavior in children and adolescents, and the moderating effect on this relationship is not fully clear. Therefore, the present study employed a three-level meta-analysis to quantitatively synthesize the results of original literatures to obtain reliable estimates of effect sizes and examined a range of moderators (sample, publication, study design, outcome, and assessment characteristics). Through the retrieval of articles published before October 2020, the current meta-analysis identified 40 studies, with 25,605 participants (range of mean age: 6 ~ 19 years) and 333 independent effect sizes. The funnel plot and Egger's test results suggested an absence of publication bias in current meta-analysis. Analysis revealed a significant positive association between peer victimization and aggressive behavior in children and adolescents (r=0.295, p < 0.001), implying that children and adolescents showed a higher level of aggressive behavior when they experienced higher level of peer victimization. In addition, the present study found a significant moderating effect of peer victimization variable. Compared with physical victimization (r=0.219, p=0.005), the association between relational victimization (r=0.298, p=0.005) and aggressive behavior in children and adolescents was stronger. Moreover, the overall association was influenced by region. Aggressive behavior in children and adolescents was more strongly associated with peer victimization in Asia (r=0.351, p=0.006) than in South America (r=0.149, p=0.006). Study design was also a significant moderator. The association between peer victimization and aggressive behavior in children and adolescents was smaller in longitudinal (r=0.234, p=0.014) than in cross-sectional studies (r=0.339, p=0.014). Finally, the moderator analyses also showed that the informant of peer victimization was a significant moderator. The strength of the association between peer victimization and aggressive behavior in children and adolescents was significantly stronger when peer victimization was reported by teachers (r=0.476, p=0.023) than by peers (r=0.290, p=0.023). In addition, the present study found that the overall association between peer victimization and aggressive behavior in children and adolescents did not differ in strength across gender, age, publication, variable and informant of aggressive behavior. Moreover, to eliminate the multicollinearity between moderators, the current study built a multivariate model by including all significant moderators that had been identified in the bivariate models. The result indicated that at least one of the regression coefficients of moderators significantly deviates from zero (F (12, 316)=3.973, p < 0.001). In sum, the results of the current meta-analysis contribute to a better understanding of the association between peer victimization and aggressive behavior in children and adolescents. These results also provide a reference for future empirical studies on explaining aggressive behavior in children and adolescents.

Working memory training (WMT) induces neuroplasticity, but its specific mechanism remains unclear. In order to explore the spatio-temporal characteristics of brain function changes induced by WMT, the findings of 37 fMRI papers on WMT in normal population over the last 20 years were investigated with a step-by-step approach, including 5 methods and the following 6 steps, as well as with two assumptions based on the two theories— “Extended Parieto-Frontal Integration Theory” (ExtPFIT) and “neuro efficiency hypothesis”. Step 1, the changes of activation pattern and function connectivity in various brain regions before and after WMT among the 37 papers were compared using descriptive review, frequency analysis and Chi-square test. It was found that 5 association areas, 7 macro regions and 3 sub-regions of the brain were changed by WMT. Especially, the number of articles reporting decreased activation in 3 sub-regions—superior frontal gyrus, inferior parietal lobule and cingulate gyrus was more than that reporting increased activation in them, and this difference was statistically significant. Step 2, 26 out of the 37 papers were used to conduct meta-analysis with activation likelihood estimation method, and it showed that 3 sub-regions with the statistically significant effects in their decreased activation were middle frontal gyrus (BA6 and 8), superior frontal gyrus (BA6) and anterior cingulate gyrus (BA24 and 32). Step 3, based on the comprehensive results of qualitative and quantitative research analyses, a spatio-temporal model of decreased distribution in brain regions of WMT was proposed, and there were 5 results and their discussions obtained with the said model. Step 4, 31 out of the 37 papers were analyzed using non-parametric tests to check the factors that possibly regulated the training effect of WMT, which showed that the respective effect of task type and time of the training on brain activation had statistically significant. Step 5, according to the above analyses, 3 conclusions were drawn regarding the spatio-temporal characteristics of the neuroplasticity induced by WMT in normal population, i.e. 1) WMT can either weaken or enhance the brain activities, and the weakening effect appears more prominent. In addition, updating and shorter time of WMT tend to induce more weakening effects; 2) Such changes occur mostly in the frontal-parietal association area, but also possibly in the temporal lobe, occipital lobe, cingulate gyrus, striatum and other association areas, which reflects the whole brain functional association within a certain range. It highlights the spatial characteristics of the neuroplasticity, which fits in easily with ExtPFIT; 3) The 4 sub-regions of the middle frontal gyrus, superior frontal gyrus, inferior parietal lobule and cingulate gyrus (anterior in particular) in decreased activation mainly reflect the spatial characteristics of the neuroplasticity which fits in easily with “neural efficiency hypothesis” and “smarter brains may be slightly lazier”. Step 6, it was proposed that further research of the neuroplasticity induced by WMT was to possibly focus on low brain activity on its plasticity, distinguish the temporal characteristics of the training effect reflected in 4 sub-regions of middle frontal gyrus, superior frontal gyrus, inferior parietal lobule and cingulate gyrus (anterior in particular), as well as to probe the comprehensive influencing factors that increase or decrease the brain activities.

Clarifying the consensual notions, measurement properties, and performance-related effects of public service motivation (PSM) in the Chinese context is an essential prerequisite to help China establish a committed public workforce and improve its public management strategies for personnel. Previous research on PSM, albeit copious, has overlooked a massive conceptual divergence between Chinese and Western contexts and therefore undermines its applicability in cross-cultural environments. In addition, our knowledge of how to inspire PSM in employees and its negative performance impacts remains limited. Hence, the purpose of this research is to develop an integrated PSM theory within the Chinese context through investigating its core components, activation mechanisms, and associated outcomes in the workplace. To begin with, we propose that PSM in the Chinese context ought to include three essential components: instrumental, norm-based, and affective motivations. Specifically, the first is the scaffolding that comprises individuals' self-interested reasons for seeking employment in the public sector. It encompasses two subdimensions: political efficacy and an attachment to the governance regime. The former can be characterized as aspirations or predilections towards becoming high-ranking politicians whereas the latter epitomizes allegiance to the system under which one lives and functions. The second is norm-based motives that emphasize the socialized influence of public organizations on civil servants. In China, the leadership of the Chinese Communist Party, democratic centralism, a focus on the big picture, and preeminence of the government constitute the primary public values that are firmly held by civil servants. Affective motivation denotes one's impetus for reflecting one's family and social identity. Under collectivism and Confucianism, bringing glory to one's family or ancestors as well as patriotic self-sacrifice are two crucial aspects of civil servants' affective motives. Based on the abovementioned conceptualization, in this study, PSM is conceived as a mixed-motives construct. By virtue of a grounded theory approach primarily consisting of semi-structured interviews and observational fieldwork, we will further identify and refine the core and substantive components of PSM held by front-line public employees, thus laying a solid groundwork for the subsequent development of a PSM measurement scale that is highly relevant to the Chinese context. Second, through the lens of micro-interventions, we will draw on self-efficacy and predisposition-opportunity theories to design a series of behavioral experiments to examine whether and the extent to which beneficiary contacts, self-advocacy, and idea reflections activate PSM among Chinese public sector workers. Finally, we will rely on psychological contract and moral disengagement theories to investigate the underlying mechanisms of both the desirable and undesirable effects of PSM on the attitudes and behaviors of public sector employees. In sum, by developing a localized PSM quantification tool with specific consideration for the Chinese cultural, bureaucratic, and social reality, analyzing the micro-activation mechanisms of PSM, and exploring the mixed effects of PSM on organizational performance at the individual level, this study strives to comprehensively extend the existing PSM literature in the Chinese context. Findings stemming from this study will not only fill an enduring scholarly need for the establishment of locally-adaptive PSM theories but also will generate ample evidence-based policy implications regarding the approaches to increase the work motivation and job performance of Chinese public employees.

Although research has revealed that work and family can benefit each other (Casper et al., 2018), most companies still hold the belief that family matters often undermine individuals' abilities to perform their jobs. This belief is based on the notion of “work devotion schema,” which represents a traditional assumption that employees should give priority to their work ahead of other life pursuits (Bourdeau et al., 2018). According to this schema, “ideal workers” are those who are willing to work long hours and do whatever their work demands. In contrast, people who experience work-family conflict are assumed to be preoccupied by family matters and thus as failing to meet the requirements of the ideal employee according to the work devotion schema. As a result, managers are likely to provide fewer job opportunities to these people. It is implied that others at work are very likely to interpret work-family conflict as an indicator of what kind of person the employee is and to interact with him/her accordingly. Therefore, work-family conflict may not only represent a personal experience but also have interpersonal implications in the workplace.
Several studies have tested the antecedents and consequences of others' perceptions of work-family conflict. For instance, Hoobler et al. (2009) showed that managers expected female employees to have higher levels of family-to-work conflict and considered this to make them less well matched to their jobs, thus providing them with fewer opportunities. Moreover, Li et al. (2017) found that supervisor perceptions of work-family conflict were negatively related to employees' performance ratings. However, the research into others' perceptions of work-family conflict remains in its early stages.
Therefore, by integrating the literature on work-family conflict with that on stereotyping, this study builds an integrative model outlining how others at work (i.e., supervisors and coworkers) form perceptions of an employee's work-family conflict, and how these perceptions influence his/her workplace outcomes. Specifically, drawing on theories of stereotyping (Cuddy et al., 2009), we propose that employees' family characteristics (i.e., marital status, number of children, and caring for elders) may increase others' perceptions of family-to-work conflict (FWC), whereas employees' work characteristics (i.e., work time, workload, and work autonomy) may increase others' perceptions of work-to-family conflict (WFC). We also identify the boundary conditions of these relationships by proposing the moderating roles of the focal employee's gender and the perceiver's gender egalitarianism.
Moreover, building on the stereotype content model and the warmth-competence framework (Fiske et al., 2002), we delineate the interpersonal consequences of work-family conflict—that is, how others view and react to an employees' work-family conflict. We propose that others' perceptions of an employee's work-family conflict can influence their perceptions of the employee's competence and warmth. Employees who are perceived to have FWC will tend to be viewed as less competent, whereas those who are perceived to have WFC will tend to be viewed as less warm. Likewise, we propose the moderating roles of the focal employee's gender and the perceiver's gender egalitarianism in the relationships between perceptions of FWC/WFC and perceptions of competence/warmth. Finally, we extend the theoretical model by proposing leadership emergence and workplace ostracism as behavioral consequences of perceptions of competence, and supportive behavior and approach aggression behavior as behavioral consequences of perceptions of warmth.
This study makes several contributions to the literature on work-family conflict. Theoretically, it opens a new avenue for research on work-family conflict by exploring its interpersonal mechanisms and by teasing out the antecedents of others' perceptions of work-family conflict and the consequences of these perceptions. This study also advances our understanding of social perceptions in the workplace by positing that work-family conflict can serve as an important signal about an employee, to which supervisors and coworkers react accordingly. Practically, as with many stereotypes that affect workplace decisions, this study provides important implications for managers and coworkers to be aware of their own biases. Managers and coworkers should ensure that biased perceptions of work-family conflict do not affect their interpersonal behavior with other employees, as the elimination of such bias will help to create a more just and favorable working environment.

Most research on the relationship between supervisors and subordinates focuses on the actual characteristics of the relationship but lacks discussion on the implicit characteristics or patterns of the relationship. In contrast, the supervisor-subordinate relational schema focuses on the implicit cognition of the supervisor-subordinate relationship. This relational schema helps reveal the interaction process between supervisor and subordinate and advances theory in this area, providing theoretical guidance on how to promote supervisors' and subordinates' positive psychology and behaviors. Based on a systematic review of the literature, this paper defines the supervisor-subordinate relational schema as an individual's implicit cognition of the pattern or characteristics of the relationship between supervisors and subordinates. This cognitive structure can serve as role expectations and evaluative standards to assess the quality of supervisor-subordinate relationships consciously or unconsciously and as an interactive guide for individual behavior. In addition, this paper lists the measurement of the supervisor-subordinate relational schema and distinguishes the supervisor-subordinate relational schema from the related concepts. Both the supervisor-subordinate relational schema and the implicit theories of relationships belong to the domain-specific relational schemas, but the supervisor-subordinate relational schema focuses on the supervisor-subordinate relationship, while the implicit theories of relationships focus on the romantic relationship. The followership schema and the supervisor-subordinate relational schema are both schema structures. However, the cognitive object of the followership schema is followers (individual-level), while the cognitive object of the supervisor-subordinate relational schema is the supervisor-subordinate relationship (dyad-level). Relational self, relational identity, and the supervisor-subordinate relational schema all relate to relational cognition, but the definition objects are quite different. Relational self and relational identity define "Self" by relational cognition, while the supervisor-subordinate relational schema defines "Relationship." Individual traditionality and modernity, attachment style, leadership behavior, and cultural factors can predict the supervisor-subordinate relational schema. This relational schema can influence a leader's attitude and behavior and subordinates' loyalty, job performance, extra-role behavior, leader evaluation (ethical leadership), and supervisor-subordinate relationship evaluation. Meanwhile, the social-cognitive model of transference, pan familism, social learning theory can explain the antecedent influence to the supervisor-subordinate relational schema. Information processing theory is the leading theory to explain the consequences of the supervisor-subordinate relational schema. Future research is encouraged to identify the predictive factors of the supervisor-subordinate relational schema, expand its consequences, and explore its mediating mechanism.

As an important form of employee engagement in organizational decision-making, voice has an unignorable influence on employees themselves, managers and organizations. Since Hirschman raised the concept of voice, scholars have contributed to exploring the antecedents and consequences of employee voice, managerial evaluation and endorsement, as well as voice solicitation. Moreover, accumulating attention has been paid to the managerial roles in promoting employee voice and amplifying the positive effects of voice. However, research on managerial roles in voice remains unsystematic and leaves lots of issues to be addressed.
Based on Input-Process-Output (IPO) model, we summarize managerial roles in the voice process, as well as their premises and outcomes. At first, we integrate voice solicitation, employee voice, and managers' reactions toward voice (i.e., managerial endorsement and voice/voicer evaluation) into a comprehensive concept, entitled as voice behavior chain. Voice behavior chain reflects the Process component of the IPO model and portraits managerial roles in the voice contexts. In the voice behavior chain, as initiators, managers consult employees about their work-related ideas and opinions, which can facilitate employee voice. Then, as reactors, managers would decide whether to endorse employee voice or not, and meanwhile, they also evaluate voice and corresponding voicers. However, it is notable that voice behavior chain could be incomplete; that is, except for employee voice, neither of the managerial roles is a must to constitute the chain. The order of the elements within the behavior chain may also change under certain circumstances. Moreover, we provide fine-grained arguments about the distinctiveness and connections between voice solicitation and employee voice and between managerial endorsement and voice/voicer evaluation.
We also conclude that in the IPO model, voice behavior chain shares similar Input and Output components (i.e., similar antecedents and consequences), which are across individual-level, team-level and organizational-level. Regarding the Input component, managers' affective states, openness toward change, motivations, self-regulatory resources, self-efficacy, and face threat directly influence their performance in voice behavior chain. Managerial endorsement and evaluation also depend on employees' communication skills, credibility and expertise. Team-level (e.g., power distance, leader-member exchange, goal consistency and the involvement of third party) and organizational-level factors (e.g., change climate and voice norms) can also activate voice behavior chain. Since researchers tend to adopt self-regulatory theory or image/ego threat theory to trace the sources of voice behavior chain, we call for further studies to consider other potential theoretical explanations and input factors, such as managers' attributions. Regarding the Output component, voice behavior chain may have effects on individual perceived organizational support, organizational commitment, performance and promotion. It also serves as a catalyze to promote team performance and problem-solving skills and to build organizational creative climate. However, the managerial roles cannot be limited in strengthening the effects of employee voice. For instance, managerial solicitation may induce managers' emotional exhaustion if their proactive behaviors aren't followed by employee voice and support.
Drawing on the IPO model in the voice context, we emphasize the managerial roles in voice behavior chain. Thereby this study comprehensively incorporates the existing literature, identifies important issues neglected by previous research and sheds light on future studies. Researchers need to be more scrupulous of the application of the related theory when conducting cross-cultural research. Also, the constructs and dimensions of the behavior elements can be explored furtherly, and we are looking forward to more objective measurements of managerial roles. Last but not least, the research on managerial roles in voice behavior chain can be enriched by investigating spillover effects and corresponding mechanisms. We hope this review can make theoretical and practical contributions by integrating those scattered topics and guiding managers to facilitate and respond to employee voice efficiently.

The Emotions as Social Information (EASI) model posits that emotional expressions exert interpersonal effects by triggering affective reactions and/or inferential processes in observers, depending on the observer's information processing and the perceived appropriateness of the emotional expression. Since the EASI model was proposed, it has attracted extensive attention from researchers. Unfortunately, as a rising theory in recent ten years, the EASI model is still less studied in China. What are the unique theoretical contributions of the EASI model compared with other emotion theories? What progress has the EASI model made in recent ten years? What problems have been solved in various fields by using the EASI model? What other issues about the EASI model deserve further attention? To answer the above research questions, this paper discriminates the EASI model with other related theories, such as feelings-as-information theory, the dual-process model, the dual threshold model of anger, emotional contagion theory and affective event theory, to clarify the unique contributions of the EASI model in explaining emotion and related phenomena. Then, we searched and screened the empirical papers which clearly stated that they are based on the EASI model on Google Scholar, and found 63 papers in total. We review the application of the EASI model in the fields of leadership, team, customer service, negotiation and persuasion, and summarize the factors influencing the boundary conditions of the EASI model—the degree of information processing and perceived appropriateness based on the analysis of the 63 empirical papers using the EASI model. Overall, the inferential processes and affective reactions mechanism of the EASI model have been extensively verified in various fields. Among them, there are 33 studies in the field of leadership, 9 studies in the field of teamwork, 8 studies in the field of customer service, 8 studies in the field of negotiation, and 5 studies in the field of persuasion. There are mainly three factors influencing the degree of information processing: epistemic motivation (e.g., need for cognitive closure, personal need for structure, cognitive load), observer's personality (e.g., implicit personality theory, conscientiousness, moral orientation, regulatory orientation, proactive personality) and employee's efficiency. There are mainly four factors influencing perceived appropriateness: situational factors (e.g., emotional expression rules, culture, the relationship between the expressor and the observer), emotional expression content (e.g., intensity of the expression, authenticity of the expression , the target of the expression), expressor's characteristics (e.g., leadership style, gender, race, power, status) and observer's characteristics (e.g., agreeableness, regulatory orientation, power distance orientation, perceived leadership power). Based on the EASI model, we further integrate the existing research findings of the content structure, mediating mechanisms and boundary conditions of the social function of emotions into an integrated framework. Following our review, we identify avenues for future investigations. Future research should (1) strengthen the systematic verification of the EASI model, such as investigate both of the inferential processes and affective reactions as well as the observer's information processing and perceived appropriateness at the same time, consider both of the reciprocal emotions and complementary emotions when investigate observer's affective reactions; (2) enhance the integration of the EASI model with other theories (e.g., the dual threshold model of anger, emotion regulation theory, the adapted elaboration likelihood model); (3) extend the application context of the EASI model, specifically, future study can explore the mixed emotional expressions of one individual in multiple natural interaction situations, investigate the effect when the observer perceives different emotional expressions from different individuals at the same time, explore the possible effect when the observer perceives multiple emotional expressions changes of the same individual on related events at different time points, track the long-term social effect of emotional expressions, and explore the bystander effect of emotional expressions and the application of EASI in new organizational contexts; and (4) improve the measurement methods of inferential processes and affective reactions.

Visual perspective taking indicates that people understand whether others can see an object or what they have seen. In visual perspective taking, people see things from others' perspectives. Visual perspective taking is the foundation of cognitive development and also the starting point and premise of social interaction. However, ones' information usually interferes with others' perspectives. As a result, people who take others' perspectives would use their perspectives to understand others. This will result in biases in visual perspective taking. These biases are usually induced by ones' information, which is known as the egocentric bias. Egocentric bias plays an important role in unsuccessful social interaction. However, its inner mechanisms are still under debate. Specifically, the inhibitive selection model and fluency misattribution theory hold different statements on the emergence of the egocentric bias. The inhibitive selection model holds that when understanding others' perspectives, participants need to inhibit their perspectives and deal with the conflicts between their perspectives and others' perspectives. This inhibitive selection is related to the executive function, especially the inhibitory control. The fluency misattribution theory holds that when understanding others' perspectives, people tend to erroneously attribute their perspectives to others' perspectives, as their perspectives are more fluency in their minds. These two theories focus on different processes of visual perspective taking and then construct completely different theoretical approaches. The inhibitive selection model mainly focuses on the information inhibition process in the egocentric bias while ignores the information extraction and integration processes. On the contrary, the fluency misattribution theory focuses on the influence of extracting and integrating misinformation in the egocentric bias while ignores the influence of the information inhibition process. Therefore, this divergence in their theoretical approaches also suggests that the above-mentioned theories may not fully reveal the mechanisms of the egocentric bias. The present review will try to integrate the debates between the inhibitive selection model and fluency misattribution theory. Specifically, we first review the paradigms of the level-1 and level-2 visual perspective taking according to the processing level and complexity of visual perspective taking to examine the mechanisms of the egocentric bias. We found that the level-1 visual perspective taking is usually measured by the dot-probe paradigm. The level-2 visual perspective taking is usually measured by the own-body transformation task, director task, and ambiguous number paradigm. Then, we examine what factors may affect inhibitive selection and misattribution to find what factors may affect the egocentric bias. Furthermore, the inhibition-attribution collaboration model is proposed for the first time to bridge the gap between the inhibitive selection model and fluency misattribution theory. The inhibition-attribution collaboration model hypothesizes that the inhibitive selection model, which emphasizes the inhibitory process, and the fluency misattribution theory, which emphasizes the integration process, may not be mutually exclusive. These processes may jointly result in egocentric bias. Specifically, when taking others' perspectives with high uncertainty, people have difficulty in inferring others' views and perspectives correctly. In this case, the inhibitive selection model and fluency misattribution may result in egocentric bias through three processing pathways. Future studies should further test this model using the sophisticated paradigms on special groups of participants to explore how to improve social interaction by reducing egocentric bias.

Moral injury refers to the long-lasting psychological, biological, spiritual, behavioral and social impact on an individual after the exposure to morally injurious events, which entail “perpetrating, failing to prevent, bearing witness to, or learning about acts that transgress deeply held moral beliefs and expectations” (Litz et al., 2009). Since Litz et al. (2009) redefined this concept from the perspective of psychology, moral injury has attracted extensive attention in the fields of psychology, ethics, psychiatry, and sociology. The present article reviews and summarizes the concept, relevant mechanisms, measurements, and interventions of moral injury and offer recommendations for future research. We first review the background of moral injury. Moral injury can be traced back to survivor guilt, which has long been regarded as one of the symptoms of post-traumatic stress disorder. However, Litz et al.(2009) pointed out that moral injury and post-traumatic stress disorder are two different concepts, and Shay(2014) listed the five differences between moral injury and post-traumatic stress disorder in detail. Next, we review the mechanisms of moral injury. Under the influence of individual and social factors, potentially morally injurious events that severely violate an individual's moral code can lead to cognitive dissonance and intrapsychic conflict, and eventually produce lasting shame, guilt, and anxiety. In addition, different types of potentially morally injurious events may lead to different types of moral injury, but the specific mechanism is still unclear. Self-oriented events (e.g., committing a crime, failing to prevent a crime, etc.) are more likely to result in negative internal emotions and cognitions (e.g., guilt, shame, inability to forgive oneself), whereas other-oriented events (e.g., witnessing an act of violence, betrayal by a trusted person) are more likely to lead to negative external emotions and cognitions (e.g., anger, loss of trust, inability to forgive).Third, we summarizes the existing moral injury scales, with a focus on the scope of application and each scale's advantages and disadvantages. These scales can be divided into two categories according to their contents, with one group assessing moral injury symptoms alone, and another assessing both the moral injury events and symptoms. Researchers or clinicians can choose these scales according to their practical needs. Moreover, current interventions for moral injury include Cognitive Behavior Therapy, CBT-based Adaptive Disclosure Therapy, CPT-based Spiritually Integrated Cognitive Processing Therapy, etc. While being commonly used in the treatment of PTSD, those therapies are equally effective in treating the core symptoms of moral injury. We concluded this article with limitations of existing research and suggestions for future research. Moral injury events and moral injury outcomes need to be further distinguished, moral injury mechanisms need to be further studied, and the diagnostic criteria of moral injury need to be established. Researchers also need to pay attention to the differences of moral standards in different cultures, expand research on moral injury to more groups, and widen the application of research on moral injury.

The application of artificial intelligence and big data mining technology in the field of mental health has promoted the development of intelligent mental health assessment. Intelligent mental health assessment entails the application of artificial intelligence technology in acquiring and analyzing data and modeling the relationship between behavioral features and mental health problems. Intelligent mental health assessment has broadened the forms of data and the analysis methods of traditional mental health assessment, enabling researchers to obtain multi-modal data based on more simulated situations and achieve more efficient and accurate assessments.
At present, researchers mainly carry out mental health assessments based on social media data, smart device data, video game data, and wearable device data to explore various features related to mental health and build predictive models. Social media data mainly refer to the text content posted by users on social media, which is widely used in psychological assessment. Researchers have explored text features related to mental health. Foreign researchers mainly predict users' mental health conditions based on the contents posted on platforms such as Facebook and Twitter. Domestic researchers mostly rely on Weibo and other platforms to conduct related research. Smartphones and other devices record individual daily behavioral data, including application software use, communication, location movement (based on GPS), etc. These behavioral data provided effective information for predicting the psychological characteristics of individuals. Besides, with the widespread use of smartphones and other mobile devices, collecting audio and video data has become more convenient. Researchers can extract features such as actions, voices, and expressions to achieve an immediate and automatic evaluation of participants' mental health. Video game data refers to the log data of the player during the game. It contains a wealth of behavioral performance information of the individual in the virtual environment. Researchers can evaluate the individual's abilities and psychological characteristics based on the data. Game-based assessment is mainly used to assess individual abilities and cognitive impairment. However, there are few studies on mental health assessment based on games, only some assessments of the positive personality. Mental health problems are often accompanied by obvious physiological reactions. Researchers use wearable devices to collect physiological indicators such as brain electricity, eye movements, heart rate, and skin temperature for mental health monitoring. Researchers use EEG data and eye movement data to identify mental health problems related to emotions and attention. Indicators of skin temperature and heart rate reflect the individual's mood and stress state and therefore have the potential to predict the level of individual mental health.
The future research directions of intelligent mental health assessment mainly include five aspects. First, previous research on intelligent mental health assessment has often used data-driven methods to explore features and construct predicting models, which is hard to explain the complex relationship between behavioral indicators and latent mental health state. Therefore, further improvement of pertinence and refinement is demanded. Researchers should design tasks based on psychological theories, carry out meaningful feature extraction, and gradually refine from rough dichotomous diagnosis to continuous and typed diagnosis. Second, unsupervised data mining is difficult to ensure the validity and interpretability of assessment. To carry out effective assessment and reduce errors in the new simulated environment, the task design of intelligent mental health assessment should be designed based on the evidence center. Third, the current intelligent mental health assessment mainly uses the indicators in the computer field, and the relevant research considering the reliability and validity is very rare. Researchers should select prediction models based on specific tasks and test the generalization and stability of prediction models in different datasets and scenarios. Fourth, different data sources and features have unique advantages. Researchers could obtain multi-modal data for modeling and analysis with the application of the advanced technology of artificial intelligence. Finally, privacy protection and ethical issues are essential for intelligent mental health assessment. Subjects should be notified before data acquisition and use.

Telepsychology service can allow experienced psychological service providers to quickly shift their attention to the places that need them most at any time. As an example, for the mental health problems during the current COVID-19 pandemic, telepsychology service enables psychiatrists to offer immediate help, and to improve the efficiency of psychological service. China's telepsychology service has been in its early times until the COVID-19 pandemic that enforces self-quarantine for the majority of the population. In this process, two key problems have also been exposed: first, without standard norms, there is only some consensus in the industry put forward by the psychological community to refer to, which has limited authority and binding force; Second, most of the telepsychology providers in China are not professionally trained, and the traditional face-to-face intervention technology obviously cannot be conducted to provides distance service. After combing the previous telepsychology service research, we found that counselors, treatment methods and remote service methodologies are the three most important factors in the development of telepsychology service. We then creatively established a visitor-centered telepsychology service application model, which emphasizes the comprehensive role of counselors, treatment methods and remote service methodologies in telepsychology service. When visitors request telepsychology services, the interaction between factors and the interaction between factors and visitors affect the therapeutic effect of telepsychology services. Artificial intelligence also plays an important role in improving telepsychology service. It can be utilized in providing remote mental health assistance, participating in face-to-face treatment, assisting counselors in remote intervention, etc. All applied artificial intelligence techniques are combined with different telepsychology service situations, to continuously optimize the psychological service process and improve the quality of psychological service. At present, the advantages of telepsychology service are reflected in three aspects: effectiveness, convenience, and economy. Firstly, the intervention of telepsychology service on mental health problems is practical and effective, and the treatment quality is equivalent to the traditional face-to-face mental health service. For psychological practitioners who live in remote areas and engage in psychological counseling, the convenience of telepsychology services has brought solutions to their concerns of counseling and visiting relationship. Compared with traditional face-to-face psychological counseling, it is easier for visitors, psychological service staff and psychological counselors in telepsychology service to coordinate. When formulating the psychological counseling program, the place and time that visitors can make an appointment are more flexible, which can improve the efficiency of psychological counseling and reduce the waiting time. However, there are still challenges in three aspects: acceptance, privacy, and adaptability. Psychological service providers' acceptance of telepsychology service depends on their understanding of its effectiveness, flexibility and convenience and their expectation of service quality. At the same time, privacy security is also a concern that telepsychology services need to pay attention to. Consulting institutions need to establish protection protocols for customers' privacy and remind them to pay attention to their privacy in an eye-catching position on the home page of the institutions' website. With the gradual promotion of 5G technology, the key methodology of mental health care in the future are likely to include video conferencing, intelligent mobile devices, cloud computing, etc. This emerging technology provides unlimited development prospects for limited mental health services.

Autism spectrum disorder (ASD) is a kind of neurodevelopmental disorder that presents in childhood. Attentional disengagement is an essential part of the attentional orientation network. It refers to the process of disengaging attention from the original object to another one during an attention shift. In early childhood, the ability to engage and disengage attention is necessary for the development of social communication. Atypical patterns of disengagement may have adverse implications for emotional regulation, orienting, joint attention, and other abilities directly associated with socio-emotional functioning. The attentional disengagement suggests holds that early impairment of the attentional disengagement in ASD could substantially affect the development of the perception and cognitive capacity, which could then ultimately escalate into a number of impairments within the core clinical symptoms of ASD.
Many studies have shown that high-risk infants (high-risk by virtue of having an older sibling diagnosed with ASD) who are later diagnosed with ASD have impairments in attentional disengagement at an early age, and some researchers believe that attentional disengagement deficits are an early behavioral marker for the diagnosis of autism in the future. Therefore, investigating the developmental characteristics and cognitive neural mechanisms of attentional disengagement in ASD individuals has practical significance for exploring the etiology, early diagnosis, and intervention of ASD. However, studies using the gap-overlap paradigm resulted in controversial findings regarding the abnormal attentional disengagement ability in individuals with ASD. Longitudinal studies of early high-risk infants had shown that individuals with ASD exhibited difficulty in attentional disengagement before being diagnosed. The ability of attentional disengagement in infancy could predict the development of ASD later in life. The more difficult the attentional disengagement, the more likely the development of ASD. Studies of older children, adolescents, and adults with ASD had yielded mixed results. Studies found slower, faster, and no group differences in the latency of attentional disengagement in individuals with ASD compared to those in the control groups. These inconsistent results may indicate that the attentional disengagement hypothesis cannot fully explain the development of attentional disengagement in ASD. Impairments in attentional disengagement for individuals with ASD may not emerge in the first year of life and may not continue into adulthood.
This review summarizes the controversial research on the attentional disengagement of individuals with ASD in gap-overlap tasks and its relationship with the clinical symptoms of ASD. It is possible that the participants' characteristics, the research methods, and the stimulus properties are the main factors affecting attentional disengagement. This neural mechanism may involve the oculomotor nervous system, the frontal lobe, the parietal lobe, the cerebellum, and the corpus callosum. Additionally, based on previous studies, this paper proposes several possible trajectories for the development of attentional disengagement in individuals with ASD, that enrich the theoretical research in ASD. Finally, the future research directions of attentional disengagement in ASD are prospected.
The evidence of inconsistent results in attentional disengagement in ASD individuals also underscores the importance of future research aimed at establishing whether there is an ASD-specific disengagement impairment. Future research should focus on research of brain mechanisms to map the trajectory of attentional disengagement in ASD over time. It is not only necessary to conduct a prospective longitudinal study on high-risk infants with ASD but also to consider the effects of participant characteristics, the heterogeneity of ASD, stimulus properties, and variability of measurement indexes and research methods on the results of attentional disengagement comprehensively, as well as further clarify its role in the early prediction and recognition of autism. Furthermore, other behavioral manifestations or early risk markers should be combined for comprehensive diagnosis and identification, so as to develop targeted early intervention strategies and programs for high-risk infants.

Aerobic exercise is the rhythmic and continuous use of large muscle groups with sufficient oxygen supply. The aim of this review is to summarize previous research regarding the effects of aerobic exercise on working memory, episodic memory and implicit memory, and moderators among the relationships, such as timing of aerobic exercise, aerobic exercise duration, aerobic exercise intensity, cognitive engagement of aerobic exercise, age and gender. The following databases were used for the computerized searches: CNKI, Web of Science and PubMed. Aerobic exercise can improve processing speed in working memory tasks, denoted by both reaction time and event related potential. Moderate to vigorous intensity aerobic exercise before memory encoding or during consolidation can enhance episodic memory. Vigorous intensity aerobic exercise can promote implicit memory.
As for the moderators, a) timing of aerobic exercise has similar effects on the three types of memory. Aerobic exercise before memory encoding can promote all three types of memory (One study for working memory (Budde et al., 2010), one study for implicit memory (Angulo-Barroso et al., 2019), and for episodic memory in a previous meta-analysis, d = 0.11, 95% CI [-0.01, 0.23] (Loprinzi, Blough, et al., 2019)). Aerobic exercise during memory encoding can damage working memory (2 out of 3 studies have showed significant damaging effect (Loprinzi, 2018)) and episodic memory (d = -0.12, 95% CI [-0.22, -0.02] (Loprinzi, Blough, et al., 2019)), especially for vigorous intensity. Few studies have explored the effect of aerobic exercise during implicit memory encoding. Aerobic exercise during memory consolidation can promote episodic memory (d = 0.47, 95% CI [0.28, 0.67] (Loprinzi, Blough, et al., 2019)) and implicit memory (in one experimental study (Lundbye-Jensen et al., 2017)). b) Research synthesis indicates that chronic aerobic exercise is beneficial to working memory and episodic memory, while acute aerobic exercise has no significant effect. Yet, no study has directly compared the effects of acute and long-term aerobic exercise on implicit memory. c) Emerging research suggests that aerobic exercise intensity has different effect on the three kinds of memory. Moderate intensity aerobic exercise has positive effect on working memory. Vigorous intensity aerobic exercise can improve episodic memory and implicit memory. However, vigorous intensity aerobic exercise can negatively impacts working memory, which may lead to fatigue or interference, but this negative effect may be attenuated if the post-exercise recovery period is sufficient. d) Open skill aerobic exercise is performed in a dynamic and changing environment and require more cognitive engagement, such as football and basketball, while closed skill aerobic exercise take place in a predictable and static environment, requiring less cognitive engagement, such as rope skipping and stair climbing. The cognitive engagement of aerobic exercise may have positive effect on memory. e) The interactions are complex and several other moderators, such as types of memory (item memory and source memory), emotional characteristics of the learning materials, gender and age, should be carefully considered.
Next, we review the neurobiological mechanism underlying the effect of aerobic exercise on memory from the aspects of brain-derived neurotrophic factor (BDNF) and hippocampus. Animal studies generally show that BDNF is the mediator of the relationships between aerobic exercise and memory. However, the results of human research remain controversial. The change of BDNF lasts for only a few hours, thus it is easier to observe the increase of BDNF when sampling immediately after aerobic exercise. Specific gene affects the expression of BDNF. As for Val/Met heterozygous carriers, although aerobic exercise can negatively impact the episodic memory, studies have found that increasing aerobic exercise intensity can offset the adverse effects of Val/Met gene on working memory. Future research can focus on how aerobic exercise can improve the memory of Val/Met heterozygous carriers. Aerobic exercise can also cause long-term potentiation, activate hippocampus and other memory related brain areas, and induce neurogenesis. Future research can also test the laterality of fMRI activation to infer whether aerobic exercise can maintain the health of specific brain areas vulnerable to aging.
In conclusion, Future research should focus on the moderating effects of memory types, aerobic exercise timing and duration, aerobic exercise intensity and cognitive engagement, as well as age and gender, and explore the mediating role of BDNF and other molecular mechanisms (e.g., the endocannabinoid system) in human experiments, so as to reveal the neurobiological mechanism underlying the impact of aerobic exercise on memory.

Post-traumatic stress disorder (PTSD) is a mental disorder with complex etiologies that usually occurs after people are exposed to traumatic events. In the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), the criteria for PTSD included symptoms of intrusion, avoidance, negative alterations in cognitions and mood, and alterations in arousal and reactivity. The World Mental Health Surveys on Trauma and PTSD showed that more than 70% of individuals would experience traumatic events at least once in lifetime, while only a few would develop PTSD, suggesting individual differences in the genesis and development of PTSD.
Previous studies have proved that both genetic and environmental factors could influence the risk of PTSD, thus epigenetics, as a discipline investigating the interaction between environment and genes, has attracted the attention of researchers. Among the epigenetic mechanisms, histone modification has received widespread attention and has been researched in depth. Modification of histones by adding one or more chemical groups (such as acetyl group, methyl group, etc.) can lead to changes in chromatin structure and gene transcriptional activity, consequently regulating the level of gene expression. In recent years, histone modification has been implicated as an essential part in the pathogenesis of PTSD for the following reason: the development of PTSD is usually related to the maladaptation of fear memory induced by traumatic events, and histone modification plays an important role in the consolidation and extinction of fear memory correspondingly.
At present, techniques commonly used for the measurement of histone modification are Western Blotting and chromatin immunoprecipitation (ChIP), both based on the antibody technology. By combining ChIP with quantitative PCR (qPCR) technology, DNA microarray (also known as gene chip) technology or deep sequencing (Seq) technology, researchers can study the relationship between various types of histone modification and gene expression. What's more, animal models are the main methods to explore the association between histone modification and PTSD, using electric shocks (e.g., inescapable foot shock, tail shock, and tone shock), social stress (e.g., predator exposure), and single prolonged stress (SPS) to simulate symptoms of PTSD in the laboratory.
We systematically searched and screened the literatures of histone modification in PTSD through PubMed (http://www.ncbi.nlm.nih.gov/pubmed/), PsychINFO (http://psycnet.apa.org/), and PsychArticles (http://psycnet.apa.org/), with finally 16 literatures selected for detailed integration and discussion. In spite of the nonnegligible heterogeneity among these studies, they proved the overall effect of histone modification was closely associated with the development of PTSD. Histone modification that enriched in the promoter regions of candidate genes like the Bdnf and Cdk5, could significantly increase the risk of PTSD. Alterations in levels of histone acetylation and methylation in hippocampus, amygdala, and prefrontal cortex are associated with PTSD, playing key roles in the consolidation, reconsolidation, and extinction of fear memory in PTSD-like animals. It is worth noting that histone modification is mainly involved in the regulation of the immune system, the serotonergic system, the neuropeptide Y-ergic system, and the NMDA receptor-related pathways. In addition, histone modification can be regulated by a variety of enzymes, leading to flexible regulation of PTSD, making drugs that target histone modification good choices for clinical treatment of PTSD.
Studying the neurobiological mechanisms of PTSD in human patients has been blocked by many factors; moreover, applying the results of animal models of PTSD to clinical research is a long way off. Therefore, using animal models to investigate the role of histone modification in the etiology of PTSD will remain a mainstream approach for some time to come.

Disgust, as an important basic emotion, is commonly recognized as a toxin (pathogens) avoidance mechanism to protect individuals from diseases, and has far-reaching evolutionary implications and specific physiological mechanisms. Hormones are chemical messengers synthesized and secreted by endocrine cells, which affect the physiological activities of individuals by regulating the metabolism of various tissue cells. A large number of studies have found that the generation and expression of disgust involve many different hormones, including oxytocin, progesterone, estrogens, testosterone, corticosteroids, arginine-vasopressin, etc. These various systems of neuroendocrine regulations make individuals rapidly evaluate and integrate the information related to toxins and pathogen cues, and thus producing appropriate disgust and avoidance behaviors. In the current researches, oxytocin, progesterone and estrogens are the most widely studied hormones in the field of disgust. Based on animal and human researches, this article reviews and summarizes some evidence that the three hormones affect the processing of disgust and their neurophysiological mechanism and predicts future research direction.
Oxytocin is synthesized in the hypothalamus and is widely involved in social cognition and social behaviors, such as attachment. Studies have proved that oxytocin affects the generation and acquisition of disgust based on olfaction and taste, and recognition of disgust expression by regulating the activities of several brain regions such as insula, anterior cingulate gyrus, amygdala, piriform cortex, putamen, and middle frontal gyrus. Among them, oxytocin may participate in disgust learning by modulating the activity of serotonin receptors.
According to the compensatory prophylaxis hypothesis supported by quantities of animal and human researches, progesterone promotes the individuals' sensitivity of disgust to potentially infectious stimuli, thereby producing avoidance behaviors to reduce the risk of infection. At the same time, progesterone also affects the recognition of disgust expressions, but has no significant effect on the disgust learning of rodents. And amygdala activity is the main brain area affecting the processing of disgust and can be both promoted and inhibited by progesterone in the processing of disgust. Estrogens also play regulatory roles in perception and acquisition of disgust and recognition of facial expression of disgust. The amygdala and the anterior cingulate gyrus may also be the neural substrates that progesterone affects the processing of disgust, but further research will be necessary before we can draw firm conclusions.
It is noteworthy that oxytocin, progesterone and estrogens affect the generation and expression of pathogen disgust to varying degrees, except for moral disgust. This may be because pathogen disgust is more closely related to hormones than moral disgust which has a higher cognitive component, and its physiological basis is more evident in evolution. However, this may be due to current questionnaires used to measure moral disgust making the measurement indicators insensitive enough, which causes no significant effects of the three hormones on moral disgust.
In short, most of the current studies in this field are still confined to describe phenomena and doing correlational research, but know little about its internal mechanisms. Besides, there are still many contradictions in results. Future studies should explore the effects of these hormones on disgust in different sensory channels and consider their moderating roles in different genders by accurately measuring hormone levels and controlling the task difficulties. In addition, researchers can combine neuroimaging technologies with behavioral studies to clarify the neuroendocrine mechanism of these hormones affecting disgust processing.