An individual does not like to do laundry but prefers to do laundry over studying for exams. Because doing laundry is liked more than studying, predicts that the opportunity to do laundry will motivate a person to study.

The premark principle.

Explanation: A principle or concept of reinforcement whereby an individual's participation in a less desired or favored behavior is rewarded with an opportunity to participate in a much desired behavior. Because participation in the less desired behavior or action affords the individual the chance to indulge in a more favored behavior, the less desired behavior is performed with increased concentration, dedication or motivation.

Therefore, motivating a child to study could be stimulated by rewarding his reading behavior with participation in laundry.

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