Journal of Autism and Developmental Disorders

, Volume 38, Issue 3, pp 474–480 | Cite as

Exploratory and Confirmatory Factor Analysis of the Autism Diagnostic Interview-Revised

  • Thomas W. Frazier
  • Eric A. Youngstrom
  • Cynthia S. Kubu
  • Leslie Sinclair
  • Ali Rezai
Original Paper

Abstract

The factor structure of the Autism Diagnostic Interview-Revised (ADI-R) algorithm items was examined using exploratory (EFA) and confirmatory factor analyses (CFA) factor methods. The ADI-R was completed for 1,170 youths and adults (ages 2–46). Results of EFAs indicated strong support for two-factor structure, with social communication and stereotyped behavior factors. CFAs computed in a holdout sub-sample indicated roughly equal support for the above described two-factor model and a three factor model separating peer relationships and play from other social and communicative behaviors. Multi-group CFAs suggested that both two and three factor models showed good stability across age, with only slight changes in factor relationships. These findings indicate that the current ADI-R structure be revised to more accurately reflect the relationships between sub-scales.

Keywords

Autism Autism diagnostic interview-revised Exploratory factor analysis Multi-group confirmatory factor analysis 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Thomas W. Frazier
    • 1
  • Eric A. Youngstrom
    • 2
  • Cynthia S. Kubu
    • 3
  • Leslie Sinclair
    • 4
  • Ali Rezai
    • 5
  1. 1.Section of Behavioral MedicineChildren’s Hospital for Rehabilitation, The Cleveland ClinicClevelandUSA
  2. 2.Department of PsychologyUniversity of North Carolina at Chapel HillChapel HillUSA
  3. 3.Section of NeuropsychologyThe Cleveland ClinicClevelandUSA
  4. 4.Center for AutismThe Cleveland ClinicClevelandUSA
  5. 5.Center for Neurological RestorationThe Cleveland ClinicClevelandUSA

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