目的：探讨大学生的冲动性特质与异常进食行为的关系,以及情绪调节困难在其中的作用。
方法：使用冲动性特质量表（Barratt Impulsiveness Scale-11,BIS-11）、荷兰饮食行为问卷（Dutch Eating Behavior Questionnaire,DEBQ）、情绪调节困难量表（Difficulties in Emotion Regulation Scale,DERS）对某大学560名在校学生进行调查,采用中介分析考察情绪调节困难在冲动性特质对异常进食行为影响中的作用。
结果：（1）冲动性特质正向预测情绪性进食（β=0.083,t=2.008,p=0.046）和外部性进食（β=0.112,t=2.640,p=0.008）。（2）情绪调节困难正向预测情绪性进食（β=0.254,t=6.162,p<0.001）和限制性进食（β=0.113,t=2.616,p=0.010）。（3）情绪调节困难在冲动性特质对限制性进食（R2=0.072,F=10.320,p<0.001）、情绪性进食（R2=0.113,F=15.658,p<0.001）的影响中发挥完全中介作用,中介效应值分别为0.133、0.349。其中,情绪调节困难的分维度情绪冲动控制困难在冲动性特质对情绪性进食的影响中发挥完全中介作用,目标定向困难在冲动性特质对外部性进食的影响中发挥部分中介作用。
结论：大学生的冲动性特质可以直接预测异常进食行为,也可以通过情绪调节困难间接影响后者。
Objective: To explore the relationship between impulsivity and the disordered eating behavior in college students and the effect of difficulties in emotional regulation in it.
Methods: The Barratt Impulsiveness Scale-11(BIS-11), the Dutch Eating Behavior Questionnaire (DEBQ), and the Difficulties in Emotion Regulation Scale (DERS) were administered to 560 college students. Data were analyzed using SPSS macro PROCESS to assessing the mediating effect of difficulties in emotional regulation.
Results: (1) Impulsivity was a positive predictor of emotional eating (β=0.083, t=2.008, p=0.046) and external eating (β=0.112, t=2.640, p=0.008). (2) Difficulties in emotional regulation was a positive predictor of emotional eating (β=0.254, t=6.162, p<0.001) and restrained eating (β=0.113, t=2.616, p=0.010). (3) Difficulties in emotional regulation completely mediated the relationship of impulsivity in restrained eating (R2=0.072, F=10.320, p<0.001) and emotional eating behavior (R2=0.113, F=15.658, p<0.001), and the mediating effect values were 0.133 and 0.349. Specifically, difficulties in emotion impulsivity regulation, which is a sub-dimension of emotional regulation, completely mediated the relationship between impulsivity and emotional eating. Difficulties in goal orientation partially mediated the relationship between impulsivity and external eating.
Conclusion: Impulsivity in college students can not only directly affect disordered eating behaviors, but it can also indirectly affect disordered eating behaviors through difficulties in emotional regulation.
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