Preoccupation, food, and failure: An investigation of cognitive performance deficits in dieters
Preoccupation, food, and failure: An investigation of cognitive performance deficits in dieters
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DOI：
10.1002/eat.10124
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发表时间：
2003-03-01
影响因子：
5.5
通讯作者：
Rogers, PJ
中科院分区：
文献类型：
--
作者：
Jones, N;Rogers, PJ
目的：本研究检验了节食者认知表现缺陷的两种解释。首先，这些缺陷是由于食物匮乏的代谢后果造成的。第二，它们是心理起源（即，在节食过程中全神贯注于节食相关的想法会耗尽可用于非节食任务的认知资源）。方法：节食者和非节食者在食用高能量巧克力棒之前和之后进行了一系列认知任务。吃巧克力棒有望扭转食物匮乏的影响，但作为一种“威胁饮食”的食物，它可能会增加与饮食有关的关注。结果与结论：结果支持后一种预测。节食者在进食后，记忆任务的表现进一步受损，而不是改善。此外，节食者经历了一个显着增加的数量的食物和节食有关的想法。一些节食者将他们较差的表现归因于这些想法的分心。思想内容的显著个体差异解释了对表现的影响的一些可变性。(C)出版社：Wiley Periodicals，Inc.
Objective: This study tested two explanations of the cognitive performance deficits of dieters. First, these deficits are due to the metabolic consequences of food deprivation. Second, they are psychological in origin (i.e., preoccupation with dieting-related thoughts during dieting depletes the cognitive resources available for nondieting tasks). Method: Dieters and nondieters performed a battery of cognitive tasks before and after consumption of a high-energy chocolate bar. Eating the chocolate bar was expected to reverse the effects of food deprivation but, as a "diet-threatening" food, it could increase dieting-related preoccupation. Results and Conclusions: The results supported the latter prediction. Performance on a memory task was further impaired, rather than improved, after food consumption in dieters. In addition, dieters experienced a significant increase in the number of food and dieting-related thoughts. Some dieters attributed their poorer performance to distraction by these thoughts. Marked individual differences in thought content accounted for some of the variability in the effects on performance. (C) 2003 by Wiley Periodicals, Inc.