Examined was the effect of viewing an aggressive film on the behavior of 22 moderately and mildly mentally retarded children (5-11 years old). Ss' doll playing was observed after they viewed a nonaggressive and an aggressive film. Results supported the hypothesis that Ss would exhibit more aggressive behavior following the aggressive than the nonaggressive film. Males were more aggressive than females following the nonaggressive film, while females were more aggressive following the aggressive film. Ss with lower IQs were more influenced than Ss with high IQs. (CL)