Interpersonal coordination forms an integral part of successful social interaction. Yet for psychopathologies that impact social functioning (e.g., autism, social anxiety), disruptions to coordination are widely documented. Little research however has considered the underlying mechanisms by which this association is sustained. To address this shortcoming, the current registered report investigated the extent to which key dynamical control parameters that govern interpersonal coordination (frequency matching and coupling) are impacted by traits associated with social anxiety and autism. In pairs, participants performed a pendulum swinging task known to reflect disruptions to the dynamics underlying coordination, while the level of task sociality was systematically varied (solo, observed, interactive). We quantified behaviour at both the individual (e.g., movement variability) and collective (e.g., coordination) levels via indices that are sensitive to changes in the parameters governing coordination. Consistent with past research, the results revealed negative associations between measures of coordination and symptoms of social anxiety and autism. Further, the findings highlighted disruption to the frequency matching parameter as a mechanism underlying the mental health-coordination link and identified coordination stability as a potential boundary condition of this relationship.

人际协调是成功社会互动不可或缺的一部分。然而，对于影响社会功能的精神病理学（例如，自闭症、社交焦虑），协调中断已被广泛记录。然而，很少有研究考虑到维持这种联系的潜在机制。为了解决这个缺点，当前的注册报告调查了控制人际协调（频率匹配和耦合）的关键动态控制参数在多大程度上受到与社交焦虑和自闭症相关的特征的影响。参与者成对执行摆摆任务，已知该任务反映了对潜在协调动力的破坏，而任务社交性的水平有系统地变化（单独、观察、互动）。我们通过对管理协调的参数变化敏感的指标量化了个人（例如，运动可变性）和集体（例如，协调）水平的行为。与过去的研究一致，结果表明协调措施与社交焦虑和自闭症症状之间存在负相关。此外，研究结果强调频率匹配参数的中断是心理健康协调联系的潜在机制，并将协调稳定性确定为这种关系的潜在边界条件。结果显示协调措施与社交焦虑和自闭症症状之间存在负相关。此外，研究结果强调频率匹配参数的中断是心理健康协调联系的潜在机制，并将协调稳定性确定为这种关系的潜在边界条件。结果显示协调措施与社交焦虑和自闭症症状之间存在负相关。此外，研究结果强调频率匹配参数的中断是心理健康协调联系的潜在机制，并将协调稳定性确定为这种关系的潜在边界条件。