Psychometric Properties of the New Version Intelligence Tehran- Stanford - Binet in Learning Disabled Students

This study evaluated the psychometric properties of the new version Tehran Intelligence LaboratoryStanford-Binet centers of learning disabled students learning disorders related to special education was discussed. Given the sample size of 523 patients from all centers of learning disabilities, to evaluated the validity using Cronbach alpha, test-retest and split-half, and the error of measurement -measurement was obtained. Also, in order to validate the diagnostic validity studies for three reading ability, and focus were used to calculate sensitivity coefficients were calculated in the interpretation of diagnostic validity. In addition, confirmatory factor analysis was used to examine the internal structure and psychometric findings survey indicated that the Factor validity of the instrument has been validated and this instrument as a Creditand valid and reliable tool for screening and diagnosis of learning disabilities.