Autism is an increasingly prevalent neurodevelopmental disorder (Matson & Kozlowski, 2011) that manifests as impaired ability to socially interact and communicate, with apparent stereotypic behavior and limited interests (American psychiatric association, 2000). Currently, the majority of the standardised tools are developed in English speaking countries; therefore, the aim of the current study was to translate the Gilliam Autism Rating Scale-2 from English into Arabic using the classical translation procedures described in the literature. The GARS-2 was translated into Arabic,...