The study investigates the relative efficacy of self-monitored and externally imposed reinforcement in intrinsically motivated and extrinsically motivated children, grades two through five. Results show the importance of individual differences in children's dispositions to respond to incentive conditions. (JH)

The primary purpose of the present research was to explore the relationship of ability and intrinsic motivation in the prediction of job performance. Intrinsic motivation was traced to two primary determinants. One, an organizational factor, is the extent to which an employee's job is "enriched," or incorporates challenging elements such as…