Document Type

Dissertation

College

College of Arts and Sciences

Department

Psychology

Degree

PhD in Behavior Analysis

Dissertation Defense Date

2011

First Committee Member

Thompson, Rachel H.

Second Committee Member

Hanley, Gregory P.

Third Committee Member

Hakala, Christopher

Additional Committee Member(s)

Karsten, Amanda

Abstract

"Invariable or repetitive behavior is a defining feature of autism. However, little research has described the extent to which invariable responding occurs in children with autism (CWA) compared to typically developing children (TDC). In Experiment 1, we compared the variability in play material selection between 37 CWA and 30 TDC children. CWA were more likely to respond invariably. We also analyzed and discuss age effects, sequential selections, and consistency of variability across activities. In Experiment 2, we demonstrated methods for increasing variability in play material selection for three CWA and explored generalization of intervention effects to untargeted play activities."

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