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Journal of Autism and Developmental Disorders

Gepubliceerd in:

01-10-2009 | Original Paper

Laughter Differs in Children with Autism: An Acoustic Analysis of Laughs Produced by Children With and Without the Disorder

Auteurs: William J. Hudenko, Wendy Stone, Jo-Anne Bachorowski

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 10/2009

Abstract

Few studies have examined vocal expressions of emotion in children with autism. We tested the hypothesis that during social interactions, children diagnosed with autism would exhibit less extreme laugh acoustics than their nonautistic peers. Laughter was recorded during a series of playful interactions with an examiner. Results showed that children with autism exhibited only one type of laughter, whereas comparison participants exhibited two types. No group differences were found for laugh duration, mean fundamental frequency (F₀) values, change in F₀, or number of laughs per bout. Findings are interpreted to suggest that children with autism express laughter primarily in response to positive internal states, rather than using laughter to negotiate social interactions.

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Subtypes of unvoiced laughter have been identified in prior studies of typically developing adults. Due to the near absence of laughs identified as “snorts” in other studies, this distinction was not pertinent here.

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Titel: Laughter Differs in Children with Autism: An Acoustic Analysis of Laughs Produced by Children With and Without the Disorder
Auteurs: William J. Hudenko
Wendy Stone
Jo-Anne Bachorowski
Publicatiedatum: 01-10-2009
Uitgeverij: Springer US
Gepubliceerd in: Journal of Autism and Developmental Disorders / Uitgave 10/2009
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI: https://doi.org/10.1007/s10803-009-0752-1

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