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

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...

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Bibliographic Details
Published in:Journal of autism and developmental disorders 2008-03, Vol.38 (3), p.474-480
Main Authors: Frazier, Thomas W., Youngstrom, Eric A., Kubu, Cynthia S., Sinclair, Leslie, Rezai, Ali
Format: Article
Language:English
Subjects:
Adolescent
Adult
Algorithms
Autism
Autism Spectrum Disorders
Autistic Disorder - diagnosis
Behavioral Science and Psychology
Biological and medical sciences
Caregivers
Child
Child and School Psychology
Clinical Diagnosis
Confirmatory factor analysis
Diagnosis
Diagnosis, Differential
Factor Analysis
Factor Analysis, Statistical
Factor Structure
Family (Sociological Unit)
Female
Humans
Interpersonal Competence
Interpersonal Relationship
Interrater Reliability
Interview, Psychological
Interviews
Male
Mathematics
Measures (Individuals)
Medical sciences
Neuropsychology
Neurosciences
Original Paper
Pediatrics
Peer Relationship
Psychology
Psychology. Psychoanalysis. Psychiatry
Psychometrics
Psychometrics. Diagnostic aid systems
Psychopathology. Psychiatry
Public Health
Resistance (Psychology)
Social Behavior
Symptoms (Individual Disorders)
Techniques and methods
Verbal Communication
Verbal Stimuli
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Summary: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.
ISSN:0162-3257
1573-3432
DOI:10.1007/s10803-007-0415-z