One of the mini-theories that are part of the Self-determination theory. It explains the effects of extrinsic factors on intrinsic motivation. Its basic premise is that if an individual perceives that his/her actions are controlled by outside factors, it will reduce that individual’s motivation for the behavior in question. On the other hand, if external events make a person feel competent in an activity, this will increase that person’s intrinsic motivation for the activity in question.