Brief report: Symptom onset patterns and functional outcomes in young children with autism spectrum disorders

Stacy Shumway, Audrey Thurm, Susan E. Swedo, Lesley Deprey, Lou Ann Barnett, David G Amaral, Sally J Rogers, Sally J Ozonoff

Research output: Contribution to journalArticle

32 Scopus citations


This study examined the relationship between onset status and current functioning using a recently proposed onset classification system in 272 young children with autism spectrum disorder (ASD). Participants were classified into one of the following groups, based on parent report using the Autism Diagnostic Interview-Revised: Early Onset (symptoms by 12 months, no loss), Delay + Regression (symptoms by 12 months plus loss), Plateau (no early symptoms or loss), and Regression (no early symptoms, followed by loss). Findings indicate that current functioning does not differ according to onset pattern, calling into question the use of onset categorizations for prognostic purposes in children with ASD.

Original languageEnglish (US)
Pages (from-to)1727-1732
Number of pages6
JournalJournal of Autism and Developmental Disorders
Issue number12
StatePublished - Dec 2011



  • Autism
  • Onset
  • Outcomes
  • Regression
  • Symptom

ASJC Scopus subject areas

  • Developmental and Educational Psychology

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