ABSTRACT

Both affective lability and eating expectancies have been found to predict binge eating. There is the additional possibility that the joint effect of affective lability and eating expectancies incurs further risk: perhaps expectancies for affective relief from eating operate more strongly in those experiencing frequent, rapid shifts in emotion. In the current study, we tested whether such a joint effect predicts binge eating prospectively in college students. We assessed affective lability, eating expectancies, and binge eating in 358 college students at two time points during the first year of college (e.g., December and April). The interaction of affective lability and eating expectancies in December predicted binge eating 4 months later in April. The influence of eating expectancies on binge eating was stronger at higher levels of affective lability. Findings offer support to the hypothesis that risk factors may transact to further elevate risk for eating disorder behaviors.

Clinical implications

• The interaction of affective lability and eating expectancies predicts binge eating

• Risk factors may interact to further increase binge eating

• Identification of co-occurring risk factors may have vital treatment implications

摘要

已发现情感不稳定性和进食预期都可以预测暴饮暴食。还有一种可能性是，情感不稳定性和进食预期的联合作用会带来进一步的风险：对于那些经历频繁、快速的情绪变化的人来说，对进食的情感缓解的预期可能更为强烈。在当前的研究中，我们测试了这种联合效应是否可以预测大学生的暴饮暴食。我们在大学第一年的两个时间点（例如，12 月和 4 月）评估了 358 名大学生的情感不稳定、饮食预期和暴饮暴食。12 月的情感不稳定性和饮食预期的相互作用预测了 4 个月后的 4 月的暴饮暴食。在情感不稳定性较高的情况下，饮食预期对暴饮暴食的影响更强。研究结果为以下假设提供了支持，即风险因素可能会进一步增加饮食失调行为的风险。

临床意义

• 情感不稳定性与饮食预期的相互作用预示着暴饮暴食

• 风险因素可能相互作用，进一步增加暴食

• 确定同时发生的危险因素可能对治疗有重要意义