Department of Psychology, Miami University, Oxford, Ohio.
Department of Psychiatry, University of California San Diego, San Diego, California.
Int J Eat Disord. 2019 Aug;52(8):871-884. doi: 10.1002/eat.23123. Epub 2019 Jun 22.
The network theory of psychopathology has been described as an "innovative framework" that may "transform" clinical psychological science. Several network studies have identified central eating disorder (ED) symptoms, yet studies have been comprised primarily of women. Using two large samples, we constructed ED symptom networks among men to identify central symptoms.
Participants were recruited from three universities and using Amazon's Mechanical Turk. Participants completed the Eating Disorder Examination-Questionnaire (EDE-Q), Male Body Attitudes Scale, and Drive for Muscularity Scale. ED symptom networks were jointly estimated among men with (n = 248) and without core ED symptoms (n = 902). Core ED symptoms were defined by (a) scoring above a suggested male EDE-Q clinical cutoff and (b) reporting symptoms consistent with probable ED diagnoses. Expected influence and predictability (proportion of each node's variance explained by other nodes in the network) were calculated for each node.
Shape overvaluation, desiring weight loss, fear of losing control over eating, feeling guilty for missing weight training, and using supplements had the greatest expected influence and predictability. Network structures did not significantly differ between participants with versus without core ED symptoms.
The centricity of body dissatisfaction items in the networks supports some components of cognitive behavioral theories of EDs. However, the findings also suggest the importance of muscularity- and leanness-oriented concerns, which have been traditionally neglected from leading ED theories that tend to focus on thinness pursuits as a main driver of body dissatisfaction.
心理病理学的网络理论被描述为一种“创新框架”，可能“改变”临床心理学科学。几项网络研究已经确定了核心饮食失调（ED）症状，但这些研究主要由女性组成。我们使用两个大型样本，在男性中构建 ED 症状网络，以确定核心症状。
参与者从三所大学和亚马逊的 Mechanical Turk 招募。参与者完成了饮食失调检查问卷（EDE-Q）、男性身体态度量表和肌肉发达驱力量表。在有（n=248）和没有核心 ED 症状的男性中（n=902）共同估计 ED 症状网络。核心 ED 症状由以下两种情况定义：（a）EDE-Q 得分高于建议的男性临床截止值，（b）报告与可能的 ED 诊断一致的症状。计算每个节点的预期影响和可预测性（网络中其他节点解释每个节点方差的比例）。
体型高估、渴望减肥、害怕失去对进食的控制、因错过举重训练而感到内疚、以及使用补品具有最大的预期影响和可预测性。有和没有核心 ED 症状的参与者之间，网络结构没有显著差异。
网络中身体不满项目的中心性支持 ED 认知行为理论的某些成分。然而，这些发现也表明肌肉发达和苗条关注的重要性，这些关注传统上被忽视了，而主流的 ED 理论往往专注于追求消瘦作为身体不满的主要驱动力。
