Bahram Movahedzadeh - Faculty of Psychology, Faculty of Psychology, Payame Noor University, Tehran, Iran
Marzieh Jamali Shah-mansouri - Master of Clinical Psychology, Islamic Azad University, Tehran, Iran

Background: Applied Behavior Analysis (ABA) is applicable for children and adults with different psychological disorders, developmental disabilities, and learning disabilities. The goal of the present study was to examine the effectiveness of ABA in the increase of self-help skills and reduction of stereotyped behaviors of children with Autism Spectrum Disorder (ASD) in Isfahan, Iran.Methods: this was a quasi-experimental study. The study population included ۵۱۲ children diagnosed with ASD in Isfahan, Iran during ۲۰۱۵-۲۰۱۶. Using a convenience sampling method, ۲۶ participants were randomly divided into experimental and control groups (۱۳ participants in each group). The study instruments included: the Self-Help Skills Developmental Chart and the Gilliam Autism Rating Scale that were administered at both pretest and posttest. The experimental group received an ABA intervention for ۲۰ sessions (each session: ۲ hours) over ۳ months. Data analysis was done using IBM SPSS Statistics for Windows, Version ۲۲.۰.Results: The results showed that there was a significant difference between autistic children in the experimental and control groups in self-feeding (t=۷.۰۱, P=۰.۰۱), personal hygiene (t=۱۱.۱۲, P=۰.۰۰۳), mobility impairments and unusual behaviors (t=۶۳.۶۳, P<۰.۰۰۱), verbal and non-verbal behaviors (t=۱۱.۵۸, P<۰.۰۰۱), interaction with people, objects, and situations (t=۱۱.۸۱, P=۰.۰۰۳), and developmental impairments (t=۸۸.۲۸, P<۰.۰۰۱). Conclusion: The ABA appears to be an effective method for increasing self-help skills and reducing stereotypic behaviors in children with ASD. Educational psychologists can use behavioral activation therapy to treat the learning problems of children with ASD.

Applied Behavior Analysis; Autistic Disorder; Autism Spectrum Disorder; Developmental Disabilities; Stereotyped Behavior