Two studies were done to examine aggressive behavior in humans. In Experiment One, adults working on a plunger pulling task could receive a 3.5 ma shock at 75% probability every two minutes. The shock was unrelated to their plunger pulling behavior. Subjects could press a toggle switch to deliver electric shock to the experimenter, who was in the…

The study compared the effectiveness of (1) reinforcement of other behavior, (2) verbal reprimands, and (3) movement suppression time-out in eliminating self injury and aggressive behaviors in two severely mentally retarded adult males. Improvements were only apparent when movement suppression was paired with either or both of the other…

The behavior of four boys who were referred for oppositional, rule violating, and aggressive behaviors was assessed by direct observation and parent reports. Changing contract behavior to solitary toy play resulted in reduced oppositional behavior during the observation sessions, fewer reports from the parents of low-rate problem behaviors, and…