Sleep disturbance in intentional self-awakenings: behavior-genetic and transient factors

Unaided self-awakenings were studied, using a baseline vs treatment comparison with 84 undergraduate subjects serving as their own controls. The data suggest that situational constraints related to time and sleep environment affect successful awakenings, that the subjects' instructional set produces a temporary sleep disturbance, and that chronically sleep satisfied or dissatisfied groups respond differently to the procedures used here.