Validity of the autism diagnostic interview-revised.

TitleValidity of the autism diagnostic interview-revised.
Publication TypeJournal Article
Year of Publication2006
AuthorsLecavalier, L, Aman MG, Scahill L, McDougle CJ, McCracken JT, Vitiello B, Tierney E, Arnold EL, Ghuman JK, Loftin RL, Cronin P, Koenig K, Posey DJ, Martin A, Hollway J, Lee LS, Kau ASM
JournalAmerican journal of mental retardation : AJMR
Date Published2006 May
KeywordsAdolescent, Autistic Disorder, Child, Child, Preschool, Demography, Female, Humans, Interview, Psychological, Male, Questionnaires, Reproducibility of Results, Severity of Illness Index

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.

Alternate JournalAm J Ment Retard