压力对贪食症症状和 BMI 的直接和间接影响：非理性食物信念的中介作用。
Direct and indirect effects of stress on bulimic symptoms and BMI: the mediating role of irrational food beliefs.
机构信息
Department of Psychology, Niagara University, NY 14109-2208, United States.
出版信息
Eat Behav. 2012 Jan;13(1):54-7. doi: 10.1016/j.eatbeh.2011.09.008. Epub 2011 Oct 7.
OBJECTIVE
To test the possible mediating role of irrational food beliefs (IFBs) in the connection between stress and bulimic symptoms and BMI in a subclinical population.
METHODS
Participants were college students (N=356) administered measures of daily hassles, IFBs, and bulimic symptoms. Simple mediation analyses using bootstrapping methods were performed to examine the potential direct effects of stress, and indirect effects of stress through IFBs, on bulimic symptoms and BMI.
RESULTS
Daily hassles exerted a direct effect on bulimic symptoms, but not on BMI. Indirect effects of daily hassles, through IFBs, on both bulimic symptoms and BMI were observed. The pattern of results was not altered when gender was included in the models as a covariate.
CONCLUSIONS
The findings support a cognitive mediation model of the effects of stress on eating disorder symptoms and body mass through irrational food beliefs in both men and women.
目的
在亚临床人群中，检验非理性食物信念（IFB）在压力与暴食症状和 BMI 之间的关联中可能存在的中介作用。
方法
对 356 名大学生进行了日常困扰、IFB 和暴食症状的测量。采用 Bootstrap 方法进行简单中介分析，以检验压力对暴食症状和 BMI 的直接影响，以及 IFB 通过压力对暴食症状和 BMI 的间接影响。
结果
日常困扰对暴食症状有直接影响，但对 BMI 没有影响。日常困扰通过 IFB 对暴食症状和 BMI 均有间接影响。当将性别作为协变量纳入模型时，结果模式没有改变。
结论
这些发现支持了一个认知中介模型，即压力通过非理性食物信念对男女的饮食障碍症状和体重产生影响。
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