This document contains a literature review and a discussion of issues concerned with the locus of control dimension in psychological experimentation over the past 15 years. Locus of control research is traced from the early laboratory experiments which demonstrated that instructions and perceptions about skill and chance could dramatically affect…

Four hypotheses were derived from the proposition that positive self-concept is due partly to an ability to utilize self-initiated verbal reinforcement. (Authors)

Fifteen college students participated in a 24-hour marathon group and responded to the Internal-External Scale immediately before and after the experience. The results disclosed significant positive change at the .001 level in perceived locus of internal-external control of reinforcement expectancies in the direction of increased internality.…

The literature on the behavior effects of videotaped playback reveals that little theoretical formulation has been offered to explain the positive results which have been reported. Two theoretical models are considered in regard to these results. The first, a reinforcement model, suggests that some behaviors are reinforced positively and some…