Autistic children's language imitation shows reduced sensitivity to ostracism.

In dialogue, speakers tend to imitate, or align with, a partner's language choices. Higher levels of alignment facilitate communication and can be elicited by affiliation goals. Since autistic children have interaction and communication impairments, we investigated whether a failure to display affiliative language imitation contributes to their conversational difficulties. We measured autistic children's lexical alignment with a partner, following an ostracism manipulation which induces affiliative motivation in typical adults and children. While autistic children demonstrated lexical alignment, we observed no affiliative influence on ostracised children's tendency to align, relative to controls. Our results suggest that increased language imitation-a potentially valuable form of social adaptation-is unavailable to autistic children, which may reflect their impaired affective understanding.

Children show selectively increased language imitation after experiencing ostracism.

When threatened with ostracism, children attempt to strengthen social relationships by engaging in affiliative behaviors such as imitation. We investigated whether an experience of ostracism influenced the extent to which children imitated a partner's language use. In two experiments, 7- to 12-year-old children either experienced ostracism or did not experience ostracism in a virtual ball-throwing game before playing a picture-matching game with a partner. We measured children's tendency to imitate, or align with, their partner's language choices during the picture-matching game. Children showed a strong tendency to spontaneously align with their partner's lexical and grammatical choices. Crucially, their likelihood of lexical alignment was modulated by whether they had experienced ostracism. We found no effect of ostracism on syntactic alignment. These findings offer the first demonstration that ostracism selectively influences children's language use. They highlight the role of social-affective factors in children's communicative development, and show that the link between ostracism and imitation is broadly based, and extends beyond motor behaviors to the domain of language. (PsycInfo Database Record (c) 2020 APA, all rights reserved).