Social manipulation of preference in the human brain.

Social manipulation of preference in the human brain.
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DOI:
10.1016/j.neuron.2013.03.023
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发表时间:
2013-05-08
期刊:
影响因子:
16.2
通讯作者:
Adolphs R
Adolphs R
中科院分区:
医学1区
文献类型:
--
作者:
Izuma K;Adolphs R

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我们的偏好受到他人喜好的影响,但主要取决于我们对这些人的感觉,这是一种被称为“认知平衡”的经典心理效应。在这里,我们通过告诉参与者强烈喜欢或不喜欢的人群的偏好来操纵他们对商品的偏好。参与者的偏好倾向于喜欢的那一组,但与不喜欢的那一组不同。背内侧前额叶皮层(dmPFC)的激活跟踪了一个人自己的偏好与其社会理想之间的差异,并与随后的偏好变化(倾向于喜欢的群体,远离不喜欢的群体)有关,甚至在几个月之后。一项后续研究发现,在消极的货币结果中,dmPFC同一区域的重叠激活,但与反应冲突引起的附近激活没有重叠。因此,一次社会接触可以导致长期的偏好改变,这是一种招募dmPFC的机制,可能反映了认知失衡的厌恶本质。
Our preferences are influenced by what other people like, but depend critically on how we feel about those people, a classical psychological effect called “cognitive balance”. Here we manipulated preferences for goods by telling participants the preferences of strongly liked or disliked groups of other people. Participants’ preferences converged to those of the liked group, but diverged from the disliked group. Activation of dorsomedial prefrontal cortex (dmPFC) tracked the discrepancy between one’s own preference and its social ideal, and was associated with subsequent preference change (towards the liked and away from the disliked group), even several months later. A follow-up study found overlapping activation in this same region of dmPFC with negative monetary outcomes, but no overlap with nearby activations induced by response conflict. A single social encounter can thus result in long-lasting preference change, a mechanism that recruits dmPFC and that may reflect the aversive nature of cognitive imbalance.
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