Comparison of Disfluent and Ungrammatical Speech of Preadolescents with and without ASD

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This paper analyses disfluencies and ungrammatical expressions in the speech of 11–13-year-old Finnish-speaking boys with ASD (N = 5) and with neurotypical development (N=6). The ASD data were from authentic group therapy sessions and neurotypical data from teacher-led group discussions. The proportion of disfluencies and ungrammatical expressions was greater in the speech of participants with ASD (26.4%) than in the control group (15.5%). Furthermore, a qualitative difference was noted: The ASD group produced long, complex disfluent turns with word searches, self-repairs, false starts, fillers, prolongations, inconsistent syntactic structures and grammatical errors, whereas in the control group, the disfluencies were mainly fillers and sound prolongations. The disfluencies and ungrammatical expressions occurring in the ASD participants’ interactions also caused comprehension problems.
Translated title of the contributionVertaileva tutkimus autististen ja neurotyypillisten varhaisnuorten epäsujuvasta ja epäkieliopillisesta puheesta
Original languageEnglish
JournalJournal of Autism and Developmental Disorders
Issue number8
Pages (from-to)2773-2789
Number of pages17
Publication statusPublished - Oct 2020
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 6121 Languages
  • autism
  • autism spectrum disorder
  • disfluent speech
  • ungrammatical speech
  • comprehension problems
  • conversation analysis
  • 6163 Logopedics

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