The Effect Of Risk Preference On Two-Peoples Risk Decision-Making

Background and ObjectivesDecision-making is closely related to people’s lives,and its quality plays a crucial role in the positive development of individuals and groups.In daily life,with the complexity of decision making tasks and environment,single person decision making may have "one word",or it is difficult to fully consider the decision situation,and the decision-related information is less available,so that the decision making individuals face more risks.Group decision making can effectively avoid the disadvantages of single person decision making,in which two-peoples risk decision making is the more common group decision making mode,which can be a good entry point for studying group decision making.Risk preference refers to the basic reaction and psychological tendency of individuals towards risk,which can reflect the attitude of individuals when facing risky decisions and can better predict individual risky decision behavior.The investigation of the differences in cooperative behaviors of people with different risk preferences in two-peoples risk decision making and the related neural mechanisms can help to deeply analyze the real motives of cooperative behaviors in two-peoples risk decision making and provide objective basis and scientific support for related theories.MethodsThis study was divided into two parts,using a behavioral experiment and an f NIRS superscan study.The behavioral experiment first used a single-person version of the continuous risk decision unboxing task for baseline measurement and grouping of subjects’ risk preferences,followed by a two-peoples version of the continuous risk decision unboxing task for an experimental study of pairwise risk decision making.f NIRS superscan study equipped with the f NIRS instrument based on the two-peoples version of the continuous risk decision unboxing task to examine pairwise risk decision making in different pairwise groups at the level of brain mechanisms Behavior.Results1 、 Among the two-peoples risk decision making preferences,the risk-takingadventuring group showed a strong risk-seeking preference and the conservativeconservative group showed a strong risk-avoidance preference.2、In two-player risky decision making performance,the risk-taking-adventuring group has the highest performance and the risk-taking-conservative group has the lowest performance.3、In two-peoples risk decision making process,the compromise open-box rate was significantly higher for conservatives than for risk-takers,and the lowest number of disagreements was found for the risk-taking-adventuring group.Further analysis revealed that in the risk-taking-conservative pair group,the compromise no-open-box rate was significantly higher for risk-takers than for conservatives,and the compromise open-box rate was significantly higher for conservatives than for risk-takers.4、In two-peoples risk decision making,risk takers were more sensitive to gain outcome,showing stronger activation of central dl PFC brain region,left dl PFC,and OFC brain region;conservatives were more sensitive to loss outcome,showing strong activation of left dl PFC brain region,and OFC brain region.5、In two-peoples risk decision making,the risk-taking-risky group showed stronger interbrain synchrony,and the risk-taking-conservative group showed higher interbrain synchrony for loss outcomes than gain outcomes.Conclusions1 、 In two-peoples risk decision making,conservatives had significantly higher compromise open-box rates than risk-takers and were more influenced by group polarization.2、In two-peoples risk decision making,the risk-taking-risk-taking group was more influenced by monetary rewards and showed risk seeking;the conservative-conservative group was more influenced by monetary losses and showed risk avoidance.3、Integrating the results of behavioral and f NIRS superscan studies,this study concluded that the risk-taking-risk-taking pair group had higher quality of risky decisions in risk-seeking situations.