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College basketball team records were used to examine the effects of coaching changes and length of tenure on team effectiveness. Coaching change and team effectiveness were found to be inversely related but this relationship depended on team performance prior to the change. This led to the conclusion that coaching shifts do not affect performance. The data suggest, however, that length of coaching tenure is a significant variable affecting team performance. The relationship is curvilinear: the longer the coaching tenure, the greater the team success, but after a certain length of time (thirteen years or so) team effectiveness begins to decline.
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Eitzen et al. (1972) studied this question.
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