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• Clinical Article •
The effect of social evaluation threats on decision-making in social dilemmas: a rs-fMRI study
CHEN Zhuo  LIU Zhi-yuan  ZHENG Li  NING Rui-peng  GUO Xiu-yan 

DOI:10.12015/issn.1674-8034.2018.05.007.


[Abstract] Objective: To study the neural basis of individual differences in the effect of social evaluation threats on decision-making in social dilemmas, we used a modified prisoner's dilemmas (PD) with resting-state functional magnetic resonance imaging (RS-fMRI) technology.Materials and Methods: Sixty healthy volunteers took part in the study and were randomly divided into a threat group and a non-threat group. Participants were asked to provide their photos, which would be evaluated by strangers. The evaluations received by the threat group were mostly negative while the evaluations received by the non-threat group were mostly positive. The experiment was divided into three blocks. In each block, participants were informed of the feedback of the social evaluations, and then completed the one-shot prisoner's dilemma with different people. They needed to choose whether to cooperate with their partners or not in the prisoner's dilemma, and their remuneration would be determined by the outcomes. Cooperation rates in the prisoner's dilemma were used to explore the effect of social evaluation threats on decision-making in social dilemma. A toolbox for data processing & analysis for brain imaging (DPABI) was used to process the RS-fMRI data. This research performed correlation analysis between cooperation rates and regional homogeneity (ReHo) as well as that between cooperation rates and amplitude of low frequency fluctuation (ALFF).Results: The total cooperation rates and the third block's cooperation rates of the threat group were negatively correlated with the ALFF values of striatum, the ReHo values and the ALFF values of orbitofrontal cortex.Conclusions: It was indicated that the activities of the orbitofrontal cortex and the striatum in the resting state were related to the cooperative behavior in social dilemma after evaluation of social threats.
[Keywords] Social evaluation threats；Prisoner’s dilemma；Cooperation rates；Magnetic resonance imaging；regional homogeneity；low-frequency fluctuation

CHEN Zhuo School of physics and Materials Science, East China Normal University, Shanghai 200062, China; Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China

LIU Zhi-yuan School of physics and Materials Science, East China Normal University, Shanghai 200062, China; Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China

ZHENG Li School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China; Shanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, Shanghai 200062, China; National Demonstration Center for Experimental Psychology Education, East China Normal University, Shanghai 200062, China

NING Rui-peng* School of physics and Materials Science, East China Normal University, Shanghai 200062, China; Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China

GUO Xiu-yan* Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China; School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China; Shanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, Shanghai 200062, China; National Demonstration Center for Experimental Psychology Education, East China Normal University, Shanghai 200062, China

*Correspondence to: Ning RP, E-mail: rpning@phy.ecnu.edu.cn. Guo XY, E-mail: xyguo@psy.ecnu.edu.cn

Conflicts of interest   None.

ACKNOWLEDGMENTS  This research was supported by the Key Program of the National Social Science Foundation of China 14AZD106 Shanghai Municipality Natural Science Fund 14ZR1411300
Received  2018-02-01
Accepted  2018-04-05
DOI: 10.12015/issn.1674-8034.2018.05.007
DOI:10.12015/issn.1674-8034.2018.05.007.

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