ISSN 0439-755X
CN 11-1911/B

Acta Psychologica Sinica ›› 2023, Vol. 55 ›› Issue (4): 612-625.doi: 10.3724/SP.J.1041.2023.00612

• Reports of Empirical Studies • Previous Articles     Next Articles

Preference of dimension-based difference in intertemporal choice: Eye-tracking evidence

LIU Hong-Zhi4,5, YANG Xing-Lan4, LI Qiu-Yue4, WEI Zi-Han1,2,3   

  1. 1Faculty of Psychology, Tianjin Normal University, Tianjin 300387, China
    2Key Research Base of Humanities and Social Sciences of the Ministry of Education, Academy of Psychology and Behavior, Tianjin Normal University, Tianjin 300387, China
    3Tianjin Social Science Laboratory of Students’ Mental Development and Learning, Tianjin 300387, China
    4Department of Social Psychology, Zhou Enlai School of Government, Nankai University, Tianjin 300350, China
    5Laboratory of Behavioral Economics and Policy Simulation, Nankai University, Tianjin 300071, China
  • Published:2023-04-25 Online:2022-12-30


In the field of intertemporal choice, considerable empirical evidence from behavioral and process data supports the use of dimension-based models. The existing dimension-based models provide qualitative explanations for an individual’s intertemporal choice and focus on “which dimension is the greater difference dimension”, but ignore the preference of dimension-based difference (i.e., “how much different of the difference between the two dimensions”). In the present study, we used eye-tracking technology to examine the relationship between the preference of dimension-based difference and the information searching process. The results in the two experiments consistently revealed that response time, gaze transition entropy (a measure of visual scanning efficiency), and stationary gaze entropy (a measure of the level of even distribution across different areas of interest) could negatively predict the preference of dimension-based difference. Our findings highlighted the correlation between the preference of dimension-based difference and the information searching process, providing further process evidence for dimension-based intertemporal models.

Key words: intertemporal choice, dimension-based intertemporal models, preference of dimension-based difference, eye-tracking technique