Department of Psychology, Yale University, New Haven, CT, USA.
Department of Psychology, Yale University, New Haven, CT, USA.
Cognition. 2021 Jun;211:104641. doi: 10.1016/j.cognition.2021.104641. Epub 2021 Mar 16.
Moral behavior is susceptible to peer influence. How does information from peers influence moral preferences? We used drift-diffusion modeling to show that peer influence changes the value of moral behavior by prioritizing the choice attributes that align with peers' goals. Study 1 (N = 100; preregistered) showed that participants accurately inferred the goals of prosocial and antisocial peers when observing their moral decisions. In Study 2 (N = 68), participants made moral decisions before and after observing the decisions of a prosocial or antisocial peer. Peer observation caused participants' own preferences to resemble those of their peers. This peer influence effect on value computation manifested as an increased weight on choice attributes promoting the peers' goals that occurred independently from peer influence on initial choice bias. Participants' self-reported awareness of influence tracked more closely with computational measures of prosocial than antisocial influence. Our findings have implications for bolstering and blocking the effects of prosocial and antisocial influence on moral behavior.
道德行为易受同伴影响。同伴的信息如何影响道德偏好？我们使用漂移扩散模型表明，同伴影响通过优先考虑与同伴目标一致的选择属性来改变道德行为的价值。研究 1（N=100；预先注册）表明，参与者在观察他们的道德决策时准确推断了亲社会和反社会同伴的目标。在研究 2（N=68）中，参与者在观察亲社会或反社会同伴的决策之前和之后做出道德决策。同伴观察导致参与者自己的偏好与他们的同伴相似。这种对价值计算的同伴影响效应表现为对促进同伴目标的选择属性的权重增加，而这种影响独立于同伴对初始选择偏差的影响。参与者对影响的自我报告意识与亲社会影响的计算测量更为密切相关，而不是与反社会影响的计算测量更为密切相关。我们的发现对增强和阻断亲社会和反社会影响对道德行为的影响具有重要意义。
