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Psychometric Properties of an Arabic Modified Childhood Autism Rating Scale 2 Standard Form
Mais Najah Razak Al-Shibly1,2, Ali Hussein AlHusseiny2, Faris Lami3,4
1Al-Subtain Academy for Autism and Neurodevelopmental Disorders, Karbala, Iraq.
International Journal of Methods in Psychiatric Research
|December 19, 2025
Summary
A modified Arabic Childhood Autism Rating Scale 2 (CARS2) demonstrates good psychometric properties for assessing autism spectrum disorder (ASD) in children. This tool can aid psychiatric evaluations where expertise is limited.
Area of Science:
- Child psychology
- Neurodevelopmental disorders
- Psychometric assessment
Background:
- Limited psychiatric expertise and IQ testing in low- and middle-income countries pose challenges for autism assessment.
- Developing culturally relevant and psychometrically sound assessment tools is crucial.
Purpose of the Study:
- To evaluate the psychometric properties of a modified Arabic version of the Childhood Autism Rating Scale 2 Standard Form (CARS2).
- To determine the diagnostic accuracy of the Arabic CARS2 for identifying Autism Spectrum Disorder (ASD).
Main Methods:
- Diagnostic accuracy study involving 286 children conducted in Baghdad.
- Confirmatory factor analysis for structural validity, reliability analysis (standardized alpha, inter-item correlation), and ROC curve analysis for diagnostic accuracy.
Main Results:
- The modified Arabic CARS2 showed good model fit for 1-, 2-, and 3-factor solutions.
- Excellent internal consistency (alpha=0.90) and reliability were observed.
- The scale achieved high diagnostic accuracy with 82.6% sensitivity and 93.4% specificity at a cut-off of ≥28.5.
Conclusions:
- The modified Arabic CARS2 possesses strong psychometric properties.
- This validated tool can support the psychiatric evaluation of children with suspected neurodevelopmental disorders in Arabic-speaking regions.
- It addresses the need for accessible autism assessment tools in resource-limited settings.
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