A structured parent interview for identifying young children with autism

This study evaluated the psychometric properties of the Parent Interview for Autism (PIA), a structured interview for gathering diagnostic information from parents of young children with autism. Internal consistency was evaluated in a sample of 165 children under 6 years old, and test-retest reliability and construct validity were evaluated in subsamples of the original group. Results revealed internal consistency and test-retest reliability above .60 for 9 of the 11 dimensions constituting the PIA, as well as significant correlations between the PIA and other measures of autism. Six of the PIA dimensions differentiated a group of young children with autism from a developmentally comparable group with mental retardation. Implications of these findings and suggestions for future research are discussed.