Lang Martin, Bahna Vladimír, Shaver John H, Reddish Paul, Xygalatas Dimitris
Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA; LEVYNA, Masaryk University, Brno, 60200, Czech Republic.
LEVYNA, Masaryk University, Brno, 60200, Czech Republic; Institute of Ethnology, Slovak Academy of Sciences, Bratislava, 81364, Slovakia.
Biol Psychol. 2017 Jul;127:191-197. doi: 10.1016/j.biopsycho.2017.06.001. Epub 2017 Jun 6.
Behavioural synchronization has been shown to facilitate social bonding and cooperation but the mechanisms through which such effects are attained are poorly understood. In the current study, participants interacted with a pre-recorded confederate who exhibited different rates of synchrony, and we investigated three mechanisms for the effects of synchrony on likeability and trusting behaviour: self-other overlap, perceived cooperation, and opioid system activation measured via pain threshold. We show that engaging in highly synchronous behaviour activates all three mechanisms, and that these mechanisms mediate the effects of synchrony on liking and investment in a Trust Game. Specifically, self-other overlap and perceived cooperation mediated the effects of synchrony on interpersonal liking, while behavioural trust was mediated only by change in pain threshold. These results suggest that there are multiple compatible pathways through which synchrony influences social attitudes, but endogenous opioid system activation, such as β-endorphin release, might be important in facilitating economic cooperation.
行为同步已被证明有助于社会联系与合作，但实现这种效果的机制却鲜为人知。在当前的研究中，参与者与一个预先录制好的同谋进行互动，该同谋表现出不同的同步率，并且我们研究了同步对喜爱度和信任行为产生影响的三种机制：自我-他人重叠、感知到的合作以及通过疼痛阈值测量的阿片系统激活。我们发现，参与高度同步的行为会激活所有这三种机制，并且这些机制介导了同步对信任游戏中喜爱度和投资的影响。具体而言，自我-他人重叠和感知到的合作介导了同步对人际喜爱度的影响，而行为信任仅由疼痛阈值的变化介导。这些结果表明，同步影响社会态度有多种兼容的途径，但内源性阿片系统激活，如β-内啡肽释放，可能在促进经济合作中很重要。
