The Validity and Reliability of Autism Behavior Checklist
Objectives: The aim of this study was to evaluate the psychometric features of the Persian version of the Autism Behavior Checklist (ABC).
Method:The International Quality of Life Assessment (IQOLA) approach was used to translate the English ABC into Persian. A total sample of 184 parents of children including 114 children with autism disorder (mean age =7.21, SD =1.65) and 70 typically developing children (mean age = 6.82, SD =1.75) completed the ABC. Internal consistency, test-retest reliability, concurrent and discriminant validity, and cut-off score were assessed.
Results: The results of this study revealed that the Persian version of the ABC has an acceptable degree of internal consistency (.73). Test–retest comparisons using interclass correlation confirmed the instrument’s time stability (.83). The instrument’s concurrent validity with Gilliam Autism Rating Scale (GARS) was verified; the correlation between total scores was .94. In the discriminant validity, the autism group had significantly higher scores compared to the normal group. Receiver Operating Characteristic (ROC) analysis revealed that individuals with total scores below 25 are less likely to be in the autism group.
Conclusion:The Persian version of the ABC can be used as an initial screening tool in clinical contexts.
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