ISSN 0439-755X
CN 11-1911/B

心理学报 ›› 2022, Vol. 54 ›› Issue (11): 1391-1402.doi: 10.3724/SP.J.1041.2022.01391

• 研究报告 • 上一篇    下一篇


成晓君1, 刘美焕1, 潘亚峰2()   

  1. 1深圳大学心理学院, 深圳 518060
    2浙江大学心理与行为科学系, 杭州 310028
  • 收稿日期:2021-07-20 出版日期:2022-11-25 发布日期:2022-09-08
  • 通讯作者: 潘亚峰
  • 基金资助:

Shared responsibility promotes the benefit of interactive decision-making in novices: A hyperscanning study

CHENG Xiaojun1, LIU Meihuan1, PAN Yafeng2()   

  1. 1School of Psychology, Shenzhen University, Shenzhen 518060, China
    2Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 310028, China
  • Received:2021-07-20 Online:2022-11-25 Published:2022-09-08
  • Contact: PAN Yafeng


采用基于近红外脑成像的超扫描技术, 考察了责任共担(即共同承担决策结果)对个体(专家和新手)的互动决策获益(即互动决策后个体的能力提升)的影响及脑机制。结果显示, 相比于非责任共担, 责任共担条件下新手的互动决策获益更高, 其与互动同伴在额极区域存在增强的脑间活动同步性; 并且, 额极的脑间活动同步性可预测新手的互动决策获益。综上, 责任共担可以有效促进新手的互动决策获益, 额极脑间活动同步性可能是潜在的脑机制。

关键词: 互动获益, 责任共担, 社会决策, 超扫描, 近红外脑成像


Social interaction is ubiquitous. It is widely accepted that social interaction, such as social decision-making, can promote individual’s ability and performance (the so-called “interaction benefit”). For example, it was reported that individuals gained more when making a joint decision with conspecifics. Little is known, however, whether and how this interaction benefit during decision making can be biased by shared responsibility (i.e., sharing the results of joint decision-making) between the interacting agents.

To address this question, the present study used the dot location estimation task (i.e., an adapted paradigm for social decision-making) and functional near-infrared spectroscopy (fNIRS) hyperscanning (i.e., the measurement of two or more brains simultaneously) technique to investigate the impact of shared responsibility on social decision making. A total number of 70 participants were recruited, forming 35 same-gender dyads. Each dyad included one “expert” and one “novice” (differentiated based on their performance during an initial estimation of dot locations). The fNIRS optodes were placed over prefrontal and right temporo-parietal regions, with 23 channels for each participant.

Our results showed that, on the behavioral level, only the novice in a dyad benefited from interaction; also, compared to the non-shared-responsibility condition, novices obtained a higher level of interaction benefit in the shared-responsibility condition. The dyad tended to adopt a “equality strategy” (i.e., decision-making is based on both one’s own thought and the partner’s suggestion) when sharing responsibility. On the brain imaging level, interpersonal brain synchronization (IBS) within expert-novice dyads in the prefrontal and right temporo- parietal regions were detected during social decision-making. More importantly, novices showed stronger IBS in the frontal pole for the shared-responsibility condition (vs. non-shared-responsibility condition). The enhancement of frontal pole IBS positively predicted interaction benefit during social decision-making. Finally, both interaction benefit and frontal pole IBS were selectively correlated with differential performance between novices and experts during the initial estimation of dot locations.

These results suggest that sharing the results of joint decision-making can promote the benefit of interactive decision-making in novices. Interpersonal synchronization of frontal poles might serve as a potential brain mechanism. These findings have implications for decision-making, social-cognitive processes, and clinical practice.

Key words: interaction benefit, shared responsibility, social decision-making, hyperscanning, fNIRS