Bernstein Centre Freiburg, University of Freiburg, Freiburg, Germany.
Faculty of Biology, University of Freiburg, Freiburg, Germany.
PLoS Biol. 2022 Mar 3;20(3):e3001565. doi: 10.1371/journal.pbio.3001565. eCollection 2022 Mar.
A change of mind in response to social influence could be driven by informational conformity to increase accuracy, or by normative conformity to comply with social norms such as reciprocity. Disentangling the behavioural, cognitive, and neurobiological underpinnings of informational and normative conformity have proven elusive. Here, participants underwent fMRI while performing a perceptual task that involved both advice-taking and advice-giving to human and computer partners. The concurrent inclusion of 2 different social roles and 2 different social partners revealed distinct behavioural and neural markers for informational and normative conformity. Dorsal anterior cingulate cortex (dACC) BOLD response tracked informational conformity towards both human and computer but tracked normative conformity only when interacting with humans. A network of brain areas (dorsomedial prefrontal cortex (dmPFC) and temporoparietal junction (TPJ)) that tracked normative conformity increased their functional coupling with the dACC when interacting with humans. These findings enable differentiating the neural mechanisms by which different types of conformity shape social changes of mind.
思维改变是对社会影响的反应，这种改变可能是为了提高准确性而产生的信息从众，也可能是为了遵守互惠等社会规范而产生的规范从众。要想厘清信息从众和规范从众的行为、认知和神经生物学基础一直以来都很困难。在这项研究中，参与者在执行一项涉及向人类和计算机伙伴征求和提供建议的感知任务时接受 fMRI 扫描。同时包含 2 种不同的社会角色和 2 种不同的社会伙伴，揭示了信息从众和规范从众的独特行为和神经标记。背侧前扣带皮层 (dACC) 的大脑活动与向人类和计算机征求信息时的信息从众有关，但与人类互动时才与规范从众有关。一个与规范从众有关的大脑区域网络（背侧前额叶皮层 (dmPFC) 和顶颞联合 (TPJ)）与 dACC 的功能耦合在与人类互动时增加。这些发现使我们能够区分不同类型的从众心理如何通过不同的神经机制来塑造社会思维的变化。
