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Autism
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The Parent Interview for Autism-Clinical Version (PIA-CV)

A Measure of Behavioral Change for Young Children with Autism

Wendy L. Stone

Vanderbilt University, Nashville, USA, wendy.stone{at}vanderbilt.edu

Elaine E. Coonrod

Vanderbilt University Medical Center, Nashville, USA

Stacie L. Pozdol

Vanderbilt University Medical Center, Nashville, USA

Lauren M. Turner

Vanderbilt University Medical Center, Nashville, USA

The Parent Interview for Autism-Clinical Version (PIA-CV) was developed to measure autism symptom severity across a wide range of behavioral domains. Two studies were conducted to examine the psychometric properties of the PIA-CV for a sample of children under 3 years old. Results of study 1 revealed adequate internal consistency for nine of the 11 PIA-CV dimensions, as well as significant group differences on social-communication domains between 2- year-old children with autism and a developmentally matched sample. Study 2 examined the association between changes in PIA-CV scores and changes in autism symptomatology from age 2 to age 4. Results revealed that changes on PIA-CV dimensions assessing social and communication skills were associated with clinically significant behavioral and diagnostic improvements. These findings support the utility of the PIA-CV for obtaining ecologically valid information from parents and for measuring behavioral change in young children with autism.

Key Words: autism • change measure • early characteristic • parent interview • toddlers

Autism, Vol. 7, No. 1, 9-30 (2003)
DOI: 10.1177/1362361303007001017
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