Bierlich Afton M, Scheel Nanja T, Koehler Jana C, Bloch Carola, Plank Irene Sophia, Falter-Wagner Christine M
Department of Psychiatry and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany.
Department of Psychiatry and Psychotherapy, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.
Sci Rep. 2025 Jun 20;15(1):20157. doi: 10.1038/s41598-025-05395-1.
Attenuated interpersonal synchrony (IPS) has been shown between autistic individuals and their interaction partners; however, the mechanisms of this attenuation remain unclear. One possibility could lie in perceiving the timing of others' behaviors. The present study aimed to relate the behavioral production of IPS with the perception of temporal dynamics of social interactions and event timing perception in autistic and non-autistic adults. Autistic and non-autistic participants engaged in naturalistic conversations with a non-autistic stranger, who was naïve to the participant's diagnostic status. Behavioral IPS was computed using automatic video-based analysis. Participants reported their experiences of perceived IPS with the partner, as a measure of the perceived temporal dynamics of the social interaction. A perceptual simultaneity task measured the perception of event timing in a nonsocial context. Bayesian linear mixed models were used to evaluate the effects of perceived IPS ratings and simultaneity thresholds on behavioral IPS. Expectedly, behavioral IPS was reduced for dyads including an autistic adult. Neither perceived IPS ratings, nor simultaneity thresholds, were associated with reduced behavioral IPS for dyads with or without an autistic adult. These findings hint that attenuated behavioral IPS may not result from atypical perceived timing of others' behaviors or event timing perception.
已有研究表明，自闭症个体与其互动伙伴之间存在人际同步性（IPS）减弱的情况；然而，这种减弱的机制尚不清楚。一种可能性可能在于对他人行为时机的感知。本研究旨在探究自闭症和非自闭症成年人中IPS的行为表现与社交互动时间动态感知以及事件时机感知之间的关系。自闭症和非自闭症参与者与一名不了解其诊断状况的非自闭症陌生人进行自然对话。使用基于视频的自动分析计算行为IPS。参与者报告他们与伙伴之间感知到的IPS体验，以此作为社交互动时间动态感知的一种度量。一项感知同时性任务测量了非社交情境下的事件时机感知。使用贝叶斯线性混合模型来评估感知到的IPS评分和同时性阈值对行为IPS的影响。不出所料，包含自闭症成年人的二元组的行为IPS降低。对于有或没有自闭症成年人的二元组，感知到的IPS评分和同时性阈值均与行为IPS的降低无关。这些发现表明，行为IPS减弱可能并非源于对他人行为或事件时机感知的异常。
