Atypicalities of Gesture Form and Function in Autistic Adults.

TitleAtypicalities of Gesture Form and Function in Autistic Adults.
Publication TypeJournal Article
Year of Publication2019
Authorsde Marchena, A, Kim, ES, Bagdasarov, A, Parish-Morris, J, Maddox, BB, Brodkin, ES, Schultz, RT
JournalJ Autism Dev Disord
Volume49
Issue4
Pagination1438-1454
Date Published2019 Apr
ISSN1573-3432
Abstract

While well-represented on clinical measures, co-speech gesture production has never been formally studied in autistic adults. Twenty-one verbally fluent autistic adults and 21 typically developing controls engaged in a controlled conversational task. Group differences were observed in both semantic/pragmatic and motoric features of spontaneously produced co-speech gestures. Autistic adults prioritized different functions of co-speech gesture. Specifically, they used gesture more than controls to facilitate conversational turn-taking, demonstrating a novel nonverbal strategy for regulating conversational dynamics. Autistic adults were more likely to gesture unilaterally than bilaterally, a motoric feature of gesture that was individually associated with autism symptoms. Co-speech gestures may provide a link between nonverbal communication symptoms and known differences in motor performance in autism.

DOI10.1007/s10803-018-3829-x
Alternate JournalJ Autism Dev Disord
PubMed ID30523479
PubMed Central IDPMC6451661
Grant ListT32NS007413 / / National Institute of Neurological Disorders and Stroke /
U54 HD86984 / / National Institute of Child Health and Human Development /
T32 NS007413 / NS / NINDS NIH HHS / United States
R34MH104407 / / National Institute of Mental Health /
R34 MH104407 / MH / NIMH NIH HHS / United States
U54 HD086984 / HD / NICHD NIH HHS / United States