title: Whether Modulating the Activity of the Temporalparietal Junction Alters Distribution Decisions within Different Contexts: Evidence from a tDCS Study.
abstract: Distributive justice concerns how individuals and societies distribute income in a just or equal manner. We aimed to test the roles of social preference in behavioral distributive justice. We thus provide evidence of a causal link between the neural and behavioral results through the application of bilateral transcranial direct current stimulation (tDCS) over the temporoparietal junction (TPJ) of our participants. The participants were found to make fairer distributions within the known position after receiving right anodal/left cathodal tDCS and receiving right cathodal/left anodal tDCS over the TPJ than the participants who received the sham stimulation. Simultaneously, we elicited the participants' advantage inequity aversion and found that the participants who received right anodal/left cathodal tDCS and who received right cathodal/left anodal tDCS over the TPJ were more averse to advantage inequity. Additionally, the participants' distributive proportions to the lowest income stratum within the known position were strongly related to their social preference of advantage inequity aversion. Therefore, the present study demonstrated that the modulation of the excitability of the TPJ using tDCS altered the distributive decisions of the participants within the known position, and this effect might be attributable to a change in the individuals' social preferences.
authors.affiliation: Neuro & Behavior EconLab, School of Economics, Center for Economic Behavior and Decision-Making, Zhejiang University of Finance and Economics Hangzhou, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Luo
authors.affiliation: School of Economics and Interdisciplinary Center for Social Sciences, Zhejiang University Hangzhou, China.
authors.forename: Shu
authors.initials: S
authors.lastname: Chen
authors.affiliation: School of Economics and Interdisciplinary Center for Social Sciences, Zhejiang University Hangzhou, China.
authors.forename: Daqiang
authors.initials: D
authors.lastname: Huang
authors.affiliation: Neuro & Behavior EconLab, School of Economics, Center for Economic Behavior and Decision-Making, Zhejiang University of Finance and EconomicsHangzhou, China; School of Economics and Interdisciplinary Center for Social Sciences, Zhejiang UniversityHangzhou, China.
authors.forename: Hang
authors.initials: H
authors.lastname: Ye
authors.affiliation: Neuro & Behavior EconLab, School of Economics, Center for Economic Behavior and Decision-Making, Zhejiang University of Finance and Economics Hangzhou, China.
authors.forename: Haoli
authors.initials: H
authors.lastname: Zheng
keywords: advantage inequity aversion; distributive decision; social preference; temporoparietal junction; transcranial direct current stimulation