The translation and determination of psychometric properties of the Persian version of the “TOPL-2” in children aged 9 and 14

Background: Throughout the development, it is important to evaluate pragmatic language skills in typically developing children, children with autism spectrum, auditory damage, attention deficit hyperactivity disorder, pragmatic language disorder and other communication disorders. The purpose of this study is to examine the validity and reliability of the Persian version of the “TOPL-2” to achieve a standard and practical test. Methods: First, in this cross-sectional study, the test was translated into Persian language according to the WHO Protocol, and then the questionnaire was presented to 15 practitioners to determine the validity and reliability, based on the Lawshe method. The test was applied to a total number of 100 students at 14 and 9 years of age. Results: The results showed that the Persian version of “Test of Pragmatic Language - second edition” has good face validity. Impact factor was 4.8 and 4.53. There was no item that’s CVI was less than 0.79, and according to the Lawshe method, the CVR was above 0.73. Conclusion: The Persian version of the "TOPL-2" is a standard tool, with appropriate reliability and validity. Thus, it can be used for interventions based on assessment results for children with pragmatic language impairment at hospitals, clinics, and health care centers