Whole-body synchronization in autistic adults

Area of Science:

• Neuroscience
• Psychology
• Human Movement Science

Background:

• Autism spectrum condition (ASC) is characterized by altered nonverbal social behaviors, including interpersonal synchronization.
• Previous research on synchronization in ASC has largely focused on conversational contexts.
• Increased synchronization can negatively impact emotional self-regulation in neurotypical individuals.

Purpose of the Study:

• To investigate interpersonal synchronization in autistic and non-autistic adults using a novel dyadic movement task.
• To explore the role of whole-body synchronization in social interactions for individuals with ASC.
• To examine the relationship between synchronization and emotional self-regulation in a non-linguistic context.

Main Methods:

• 33 autistic and 33 non-autistic adults participated in a dyadic movement task.
• Participants engaged in "conversation without words" using improvised whole-body movements.
• An inertial sensor-based motion capture system quantified interpersonal synchronization.

Main Results:

• Autistic dyads exhibited significantly greater interpersonal synchronization than non-autistic dyads.
• No significant differences in emotional self-regulation, positive affect, or negative affect were observed across dyad types.
• Post-task emotional outcomes were not reliably associated with observed interpersonal synchronization.

Conclusions:

• Whole-body movement tasks may offer a different perspective on synchronization in ASC, bypassing language and eye-contact challenges.
• Findings extend the understanding of interpersonal synchronization in autism spectrum condition beyond conversational settings.
• Larger sample sizes are needed to confirm and generalize these findings on synchronization and autism.