Validity of the autism diagnostic interview-revised

Luc Lecavalier, Michael G. Aman, Lawrence Scahill, Christopher J. McDougle, James T. McCracken, Benedetto Vitiello, Elaine Tierney, L. Eugene Arnold, Jaswinder K. Ghuman, Rachel L. Loftin, Pegeen Cronin, Kathleen Koenig, David J. Posey, Andres Martin, Jill Hollway, Lisa S. Lee, Alice S.M. Kau

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


The factor structure, internal consistency, and convergent validity of the Autism Diagnostic Interview-Revised (ADI-R) algorithm items were examined in a sample of 226 youngsters with pervasive developmental disabilities. Exploratory factor analyses indicated a three-factor solution closely resembling the original algorithm and explaining 38% of the variance, with one significant discrepancy: Unlike the algorithm, all nonverbal communication items were associated with the Social factor. Internal consistencies of domain scores ranged from .54 to .84. Correlations between ADI-R domain and total scores and instruments assessing adaptive behavior, psychopathology, and autism were examined. They indicated some similarities between constructs, but also that the ADI-R measures autism in a unique fashion.

Original languageEnglish (US)
Pages (from-to)199-215+228
JournalAmerican Journal on Mental Retardation
Issue number3
StatePublished - May 2006

ASJC Scopus subject areas

  • Education
  • Rehabilitation
  • Developmental and Educational Psychology
  • Health Professions(all)


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