To evaluate the efficacy of Vineland Adaptive Behavior Scales in Iranian population, this scale was applied to 360 normal subjects in 15 age groups from birth to 18 years and 11 months. In urban and rural areas of Kerman. It was also filled for 40 mentally retarded individuals from variuos age groups. Findings show that all domains of this scale have significant reliability for Iranian population. It has discriminative validity in all age categories, and can distinguish mentally retarded individuals from normal population. Criterion – related validity of these scales Indicated that, the Vineland Adaptive Behavior Scale, with some changes in items, but without any changes in its instructions or administration procedure, is a valuable instrument for evaluation of communicative skills, daily living skills, socialization, motor skills and maladaptive behaviors. Preliminary norms are also reported.

Keywords: Vineland Adaptive Behavior Scale, Kerman, Standardization, Mental Retardation.

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