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 first of these two articles presents the methods, results, and discussions of six experiments which employed an avoidance of time-out from positive reinforcement schedule with human subjects to investigate: (1) whether time-outs may be considered aversive events; and (2) if so, whether the aversiveness was sufficient to produce aggressive…

Experimental modification of destructive and assaultive sibling interaction was carried out within the home environment. Two brothers (6 and 3 years old) were treated through token positive reinforcement techniques in an effort to improve their behavior towards each other. A "time out" from reinforcement procedures involved an isolation period for…