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Is Payoff Necessarily Weighted by Probability When Making a Risky Choice? Evidence from Functional Connectivity Analysis
Rao, Li-Lin1; Li, Shu1; Jiang, Tianzi2,3,4; Zhou, Yuan1; Rao, LL (reprint author), Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Magnet Resonance Imaging Res Ctr, Beijing 100101, Peoples R China.
2012-07-17
发表期刊PLOS ONE
ISSN1932-6203
文章类型Article
卷号7期号:7页码:e41048
产权排序1
摘要How people make decisions under risk remains an as-yet-unresolved but fundamental question. Mainstream theories about risky decision making assume that the core processes involved in reaching a risky decision include weighting each payoff or reward magnitude by its probability and then summing the outcomes. However, recently developed theories question whether payoffs are necessarily weighted by probability when making a risky choice. Using functional connectivity analysis, we aimed to provide neural evidence to answer whether this key assumption of computing expectations holds when making a risky choice. We contrasted a trade-off instruction choice that required participants to integrate probability and payoff information with a preferential choice that did not. Based on the functional connectivity patterns between regions in which activity was detected during both of the decision-making tasks, we classified the regions into two networks. One network includes primarily the left and right lateral prefrontal cortices and posterior parietal cortices, which were found to be related to probability in previous reports, and the other network is composed of the bilateral basal ganglia, which have been implicated in payoff. We also found that connectivity between the payoff network and some regions in the probability network (including the left lateral prefrontal cortices and bilateral inferior parietal lobes) were stronger during the trade-off instruction choice task than during the preferential choice task. This indicates that the functional integration between the probability and payoff networks during preferential choice was not as strong as the integration during trade-off instruction choice. Our results provide neural evidence that the weighting process uniformly predicted by the mainstream theory is unnecessary during preferential choice. Thus, our functional integration findings can provide a new direction for the investigation of the principles of risky decision making.
学科领域Psychology Research Method
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收录类别SCI
语种英语
项目资助者National Basic Research Program of China (973 Program) [2011CB711000] ; National Natural Science Foundation of China [31170976] ; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-J-8] ; Project for Young Scientists Fund, Institute of Psychology, Chinese Academy of Sciences [Y0CX163S01]
项目简介This research was partially supported by the National Basic Research Program of China (973 Program, No. 2011CB711000), National Natural Science Foundation of China (No. 31170976), the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX2-EW-J-8), and Project for Young Scientists Fund, Institute of Psychology, Chinese Academy of Sciences (Y0CX163S01). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. No additional external funding received for this study.
WOS记录号WOS:000306507000056
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/11876
专题中国科学院行为科学重点实验室
通讯作者Rao, LL (reprint author), Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Magnet Resonance Imaging Res Ctr, Beijing 100101, Peoples R China.
作者单位1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Magnet Resonance Imaging Res Ctr, Beijing 100101, Peoples R China
2.Chinese Acad Sci, LIAMA Ctr Computat Med, Natl Lab Pattern Recognit, Inst Automat, Beijing, Peoples R China
3.Univ Elect Sci & Technol China, Sch Life Sci & Technol, Key Lab NeuroInformat, Minist Educ, Chengdu 610054, Peoples R China
4.Univ Queensland, Queensland Brain Inst, Brisbane, Qld, Australia
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Rao, Li-Lin,Li, Shu,Jiang, Tianzi,et al. Is Payoff Necessarily Weighted by Probability When Making a Risky Choice? Evidence from Functional Connectivity Analysis[J]. PLOS ONE,2012,7(7):e41048.
APA Rao, Li-Lin,Li, Shu,Jiang, Tianzi,Zhou, Yuan,&Rao, LL .(2012).Is Payoff Necessarily Weighted by Probability When Making a Risky Choice? Evidence from Functional Connectivity Analysis.PLOS ONE,7(7),e41048.
MLA Rao, Li-Lin,et al."Is Payoff Necessarily Weighted by Probability When Making a Risky Choice? Evidence from Functional Connectivity Analysis".PLOS ONE 7.7(2012):e41048.
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