Validation of two Hand Test indices of aggressive behavior in an institutional setting

The purpose of this investigation was to determine the effectiveness of the Hand Test (Wagner, 1962/1983) in differentiating among mentally retarded adults placed in community housing versus those discharged from an institution due to violent and destructive behavior. Hand Test protocols of 24 mentally retarded adults who were discharged from an institution for violent and destructive behavior were compared with those of 12 mentally retarded adults who were placed in community housing, with regard to the presence of two indices of aggressive behavior (the acting-out score, AOS, and the movement response, ACT-MOV). Results indicated that 20 of the 24 residents discharged for aggressive behavior manifested one or more of the signs, whereas only 3 of the 12 residents discharged to a less restrictive environment exhibited one or more of the signs. The findings further demonstrate the usefulness of the Hand Test in predicting violent and destructive behavior in an institutional setting.