摘要目的:探讨大学生压力知觉对自我损耗的影响及情绪性进食与同伴关系在其中的作用。方法:2023年12月至2024年4月，使用压力知觉量表、荷兰进食行为问卷、自我损耗量表和同伴关系测量对1 088名大学生进行横断面调查。采用SPSS 25.0 PROCESS宏程序检验情绪性进食的中介效应和同伴关系的调节效应。结果:(1)在本研究中大学生压力知觉得分为(39.26±8.35)分，情绪性进食得分为(39.19±12.15)分，同伴关系得分为2.00(1.00)分，自我损耗得分为(18.19±7.15)分。(2)压力知觉与情绪性进食、自我损耗、同伴关系呈正相关( r＝0.36，0.61，0.25，均 P<0.01)；情绪性进食与自我损耗、同伴关系呈正相关( r＝0.40，0.19，均 P<0.01)；自我损耗与同伴关系呈正相关( r＝0.23， P<0.01)。(3)情绪性进食在压力知觉对自我损耗的影响中发挥部分中介作用( β＝0.077，95% CI＝0.053～0.104)，中介效应占总效应的12.38%(0.077/0.622)。(4)同伴关系在压力知觉和情绪性进食之间起调节作用。低同伴关系下，压力知觉对情绪性进食具有显著的正向预测作用( βsimple＝0.46， P<0.01)，高同伴关系下，压力知觉对情绪性进食的预测作用明显减弱( βsimple＝0.26， P<0.01)。 结论:压力知觉不仅能够直接影响大学生的自我损耗，还可以通过情绪性进食间接影响大学生的自我损耗；高水平的同伴关系可以削弱压力知觉和高情绪性进食对自我损耗的影响。

abstractsObjective:To explore the effects of perceived stress on ego depletion of college students, as well as the mediating role of emotional eating and the moderating role of peer relationship.Methods:A cross-sectional survey of 1 088 college students was conducted using the perceived stress scale, the Dutch eating behavior questionnaire, the self-control resource depletion scale, and the peer relationship measurement from December 2023 to April 2024.PROCESS Macro program in SPSS 25.0 software was used to test the mediating effect of emotional eating and the moderating effect of peer relationship.Results:(1)The score of perceived stress, emotional eating, peer relationship and ego depletion were 39.26±8.35, 39.19±12.15, 2.00(1.00), and 18.19±7.15, respectively.(2)Perceived stress was positively correlated with emotional eating, ego depletion, and peer relationship( r=0.36, 0.61, 0.25, all P<0.01). Emotional eating was positively correlated with ego depletion and peer relationship( r=0.40, 0.19, both P<0.01). And ego depletion was positively correlated with peer relationship( r=0.23, P<0.01).(3)Emotional eating played a partial mediating role in the effect of perceived stress on ego depletion( β=0.077, 95% CI=0.053-0.104), and the mediating effect accounted for 12.38%(0.077/0.622) of the total effect.(4)Peer relationship played a moderating role between perceived stress and emotional eating. Under low peer relationship, perceived stress had a significant positive predictive effect on emotional eating( βsimple=0.46, P<0.01), and under high peer relationship, the predictive effect of perceived stress on emotional eating was significantly weaker( βsimple=0.26, P<0.01). Conclusions:Perceived stress not only directly affects ego depletion, but also indirectly affects ego depletion through emotional eating in college students.High levels of peer relationship can weaken the impact of perceived stress and high emotional eating on ego depletion.