Negative urgency and expectancies increase vulnerability to binge eating in bulimia nervosa
Negative urgency and expectancies increase vulnerability to binge eating in bulimia nervosa
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DOI：
10.1080/10640266.2018.1418253
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发表时间：
2018-01-01
期刊：
影响因子：
3.3
通讯作者：
Engel, Scott
中科院分区：
文献类型：
--
作者：
Fischer, Sarah;Wonderlich, Joseph;Engel, Scott
消极紧迫感（NU），即在痛苦时冲动行事的倾向，与暴饮暴食有关。那些认为吃东西会消除负面影响的女性也更有可能暴饮暴食。因此，假设具有高水平NU的个体，以及赞同这些饮食预期的人，将在以下急性痛苦中暴饮暴食。本研究使用生态瞬时评估来检验这些假设。16名有BN症状的女性完成了临床评估，并被要求每天多次报告痛苦和暴食，持续两周。NU缓和的时间关系的负面影响，狂欢，这样的妇女与NU分数较低的经历了急剧增加的影响之前狂欢。饮食期望的个体差异也缓和了影响暴饮暴食的关系。结果表明，与不认可这些特征的女性相比，具有高水平NU和期望认可的女性因负面影响的较小变化而引发狂欢。
Negative urgency (NU), the tendency to act impulsively when distressed, is associated with binge eating. Women who believe that eating alleviates negative affect are also more likely to binge eat. Thus, it is hypothesized that the individuals with high levels of NU, and who endorse these eating expectancies, will binge eat the following acute distress. This study tested these hypotheses using ecological momentary assessment. Sixteen women with the symptoms of BN completed clinical assessments, and were asked to report on distress and binges multiple times daily for two weeks. NU moderated the temporal relationship of negative affect to binges, such that women with lower scores on NU experienced a sharper increase in affect prior to binges. Individual differences in eating expectancies also moderated the relationship of affect to binge eating. Results suggest that women with high levels of NU and expectancy endorsement are triggered to binge by smaller shifts in negative affect than women who do not endorse these traits.