Movement Coordination's Link with Common Ground During Dyadic Peer Discourse in Typically Developing and Autistic Speakers.

Common ground (CG)-a pragmatic capability that reflects the construction of shared meaning by two interlocutors during conversation-is widely accepted as crucial for effective communication, but its exploration has been limited in the context of children's peer-to-peer interaction. Specifically, this study aimed to explore CG differences between typically developing (TD) and autistic populations, CG's developmental trajectories, as well as the link between CG and motor coordination skills during peer interactions. Study participants included 148 children (6-16 years), comparing 64 TD and 84 autistic children across three age levels.