Exploring the Validity and Reliability of Turkish Version of Gilliam Autism Rating Scale-2: Turkish Standardization Study

DİKEN İ. H., Ardic A., DİKEN Ö., Gilliam J. E.

EGITIM VE BILIM-EDUCATION AND SCIENCE, vol.37, no.166, pp.318-328, 2012 (SSCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 166
  • Publication Date: 2012
  • Journal Indexes: Social Sciences Citation Index (SSCI), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.318-328
  • Keywords: Autism, assessment, GARS-2, validity, reliability, Turkish sample, CHILDREN, SPECTRUM, DIAGNOSIS, UTILITY
  • Anadolu University Affiliated: Yes


This study aims at exploring the psychometric characteristics of the Turkish version of the Gilliam Autism Rating Scale-2 (TV-GARS-2) in order to standardize it into Turkish. Individuals diagnosed with autism, intellectual disability, hearing impairment and typically developing children were the participants of this standardization study (n=1191). After carrying out the Turkish translation procedure, the reliability and validity of TV-GARS-2 were examined by conducting a series of analyses such as construct validity, discriminant validity, item analysis, confirmatory factor analysis, internal consistency and test-retest reliability. Results yielded that TV-GARS-2 is a reliable and valid assessment tool that can be used with individuals with autism in Turkey.