Applicability of Wisc-R tests in diagnosis of learning disorder at bilingual(Arabic-Persian) children

The aims of this study were applicability of the Wisc-R tests to diagnose learning disorder in bilingual (Arabic- Persian) children. for overtake aims, Were compared children of bilingual( Arabic- Persian) and monolingual( Persian) with learning disorder in two Wisc-R and Bender Gestalt tests. The study population composed of all primary school students (boys and girls) with learning disabilities whom were being studied in the educational and rehabilitation centers in Ahvaz city during the academic year of 2010-2011.this sample was contain of 58 students with learning disorders (28 students of bilingual Arabic- Persian and 30 students of Persian Language) that were selected by simple random. For gathering of data, Wisc-R and Gestalt tests were used. Obtained data were analysed using MANOVA and ANOVA statistics metod. The results showed between two groups, in all sub-scale tests of verbal( Information, Similarities, Arithmatic, Vocabulary, Comprehension and Digit span) and some non-verbal sub-scale tests of( the Picture arrangement and Object assembly) there were significant differences. Also The results indicated that between two groups, in verbal, non-verbal, and total scale Wisc-R, there was significant differences. While the two groups in the visual-motor perception quotient( Bender Gestalt test ), there was not significant difference. thut, The test of Wisc-R. due to inadequacy of children's language in verbal section ,and cultural factors in the non - verbal section , not applicable enough for bilingual Arabic- Persian students.