Objective: The purpose of the present study was to compare adaptive behavior among mental retarded and normal subjects.

Materials & Methods: 246 normal and 74 mental retarded subjects between 7 and 18 years of age participated in the study. Their adaptive behavior scores were obtained by means of "Adaptive Behavior Scale-Residential and Community" (ABS-RC:2). It is consisted of two parts and 18 domains.

Results: Significant differences were found for independent functioning, economic activity, language development, number and time, prevocational/vocational activity, self-direction, responsibility, disturbing interpersonal behavior, domestic activity, socialization, social engagement, conformity and trustworthiness. Mental retarded subject showed lower performances in these domains.

Conclusion: No significant differences were found for physical development, stereotyped and hyperactive behavior, sexual behavior, self-abuse behavior and social engagement.