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Thirty-one severely obese adults participated in behavioral weight control groups. In three groups utilizing powerful monetary contracts, subjects deposited substantial sums of money which were returned contingent on either attendance, calorie restriction, or weight loss. Subjects in a fourth no-contract control condition made no monetary deposits. Weight and calorie contract groups lost an average of nearly 20 lb in 10 weeks. They did not differ from each other, but both produced significantly more weight loss than the attendance contract group. High dropout rates in the no-contract condition precluded statistical evaluation of this group. Results are discussed in terms of the potential clinical value of contracting procedures. 相似文献
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Robert W Jeffery 《Journal of research in personality》1976,10(1):116-127
The experiment investigated the effects of the mode and patterning of rehearsal on the acquisition and retention of modeled activities varying in organizational complexity. Subjects observed a filmed model construct two configurations, containing high or low organizational requirements. Immediately after exposure they rehearsed the modeled activities either mentally, motorically, mentally and then motorically, motorically and then mentally, or engaged in a distracting activity that prevented rehearsal of what they had see. Performance tests were conducted immediately after the rehearsal phase and again 1 week later. Subjects who rehearsed the modeled behaviors symbolically, whether singly or in conjunction with motor practice, reproduced both configurations more accurately than those who rehearsed motorically or not at all. Motor rehearsal increased speed on the organizationally simple task, but did not enhance response acquisition over and above observation alone. The overall results are interpreted as supporting the social learning view that modeled behaviors are best acquired when demonstrated activities are first organized symbolically and then refined on the basis of performance feedback. 相似文献
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