The effect of a brief movement restriction (BMR) procedure on the maladaptive behavior of two severely mentally retarded persons was evaluated using a multiple baseline research design. Following a functional analysis of the maladaptive behaviors, baseline data were collected on the frequency of smearing in a six year old boy and the frequency of aggression-destruction and stereotypic behavior in a 24 year old man. Following the baseline period a treatment package that included reinforcement for alternative behavior and BMR were first introduced for feces smearing. After feces smearing had shown a reduction with the first client the treatment package was introduced for aggression and destruction with the second client. After aggression and destruction had been reduced, the treatment package was added for stereotypy. The treatment package completely eliminated each of the target behaviors and they remained absent during a long follow-up period.