The Psychometric Properties of Reynolds Intellectual Assessment Scales, Second Edition in student’s Sampad

The aim of the present study was to Psychometric Properties the Reynolds Intellectual Assessment Scales, Second Edition in students of Tehran's Sampad School in the academic year of 2017-2018, which provided a standard tool for measuring gifted children and adolescents. after the adaptation process and psychometric analyzes in the context of the Pilot version with a sample size of 30 students, a review was carried out and a Try-Out Edition version was developed. The analyzes related to the index of difficulty, clean index and other psychometric properties were carried out with a sample size of 120 students and resulted in the development of a standard version. In line with the standardization process with a sample size of 704,it was found that all questions had a suitable difficulty index and they were identified by Cronbach's alpha in terms of internal consistency coefficient and test-retest method based on stability coefficient. The coefficients of credit are more than 80%, and the tool has internal consistency and stability. Also, according to the criteria of the new version of the Tehran-Stanford-Binet Investigations Exploration, it was determined that the instrument has a criterion validity Using the recommended psychometric properties and executive capabilities in a short time, the scale can be used to measure the intelligence profile of gifted students.