Habitual behavioural control moderates the relation between daily perceived stress and purging

IF 3.9 2区 心理学 Q1 PSYCHIATRY
Elizabeth N. Dougherty, Angeline R. Bottera, Matthew F. Murray, Adaora Ekwonu, Jennifer E. Wildes, Alissa A. Haedt-Matt
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Abstract

Objective

Evidence suggests that interpersonal stress plays a role in maintaining binge eating and purging (e.g., self-induced vomiting, misuse of laxatives). Stress is especially likely to promote engagement in maladaptive behaviour if the behaviour is habitual; therefore, individuals whose binge eating and/or purging are habitual may be particularly likely to engage in these behaviours in the context of interpersonal stress. We aimed to investigate this hypothesis in a sample of women with binge eating and/or purging using ecological momentary assessment (EMA).

Method

Women (N = 81) with binge-eating and/or purging symptoms completed a self-report measure assessing habit strength of binge eating and purging followed by a 14-day EMA protocol assessing daily perceived interpersonal stress and binge-eating and purging episodes.

Results

Habit strength of purging moderated the within-person effect of interpersonal stress on purging frequency, such that higher daily stress was associated with greater same-day purging frequency when purging was more habitual. Contrary to expectations, the interactive effect of habit strength of binge eating and daily interpersonal stress on same-day binge-eating frequency was non-significant.

Conclusions

Findings suggest that individuals with habitual purging may be vulnerable to engaging in purging when they are experiencing high levels of interpersonal stress.

Abstract Image

习惯性行为控制调节了日常感知压力与清食之间的关系。
目的:有证据表明,人际压力在维持暴饮暴食和清除行为(如自我诱导呕吐、滥用泻药)方面起着一定的作用。如果行为是习惯性的,压力就特别有可能促使人们做出不适应行为;因此,习惯性暴饮暴食和/或清食的人在人际压力的背景下可能特别容易做出这些行为。我们的目的是利用生态瞬间评估(EMA)在暴食和/或暴食女性样本中研究这一假设:方法:有暴食和/或清食症状的女性(81 人)完成一项自我报告测量,评估暴食和清食的习惯强度,然后进行为期 14 天的 EMA 方案,评估每天感知到的人际压力以及暴食和清食发作情况:清食习惯的强度调节了人际压力对清食频率的人内效应,因此,当清食习惯较强时,较高的日常压力与较高的当日清食频率相关。与预期相反,暴食习惯强度和日常人际压力对当天暴食频率的交互影响并不显著:研究结果表明,习惯性清食的人在经历高水平的人际压力时可能容易进行清食。
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来源期刊
European Eating Disorders Review
European Eating Disorders Review PSYCHOLOGY, CLINICAL-
CiteScore
8.90
自引率
7.50%
发文量
81
期刊介绍: European Eating Disorders Review publishes authoritative and accessible articles, from all over the world, which review or report original research that has implications for the treatment and care of people with eating disorders, and articles which report innovations and experience in the clinical management of eating disorders. The journal focuses on implications for best practice in diagnosis and treatment. The journal also provides a forum for discussion of the causes and prevention of eating disorders, and related health policy. The aims of the journal are to offer a channel of communication between researchers, practitioners, administrators and policymakers who need to report and understand developments in the field of eating disorders.
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