Impulse Control Disorders Outpatient Unit, Institute of Psychiatry, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil.
Department of Psychology, University of Calgary, Canada.
Compr Psychiatry. 2018 Aug;85:67-71. doi: 10.1016/j.comppsych.2018.06.010. Epub 2018 Jun 28.
Compulsive buying and binge eating are two frequently co-occurring psychiatric conditions. Hoarding, which is the psychological need to excessively gather and store items, is frequently associated with both compulsive buying severity and binge eating severity. In the present study, we explored whether different dimensions of hoarding are a shared feature of compulsive buying and binge eating.
Participants consisted of 434 people seeking treatment for compulsive buying disorder. Registered psychiatrists confirmed the diagnosis of compulsive buying through semi-structured clinical interviews. Participants also completed measures to assess compulsive buying severity, binge eating severity, and dimensions of hoarding (acquisition, difficulty discarding, and clutter). Two-hundred and seven participants completed all three measures.
Significant correlations were found between compulsive buying severity and the acquisition dimension of hoarding. Binge eating severity was significantly correlated with all three dimensions of hoarding. Hierarchical regression analysis found that compulsive buying severity was a significant predictor of binge eating severity. However, compulsive buying severity no longer predicted binge eating severity when the dimensions of hoarding were included simultaneously in the model. Clutter was the only subscale of hoarding to predict binge eating severity in step two of the regression analysis.
Our results suggest that the psychological need to excessively gather and store items may constitute a shared process that is important in understanding behaviors characterized by excessive consumption such as compulsive buying and binge eating.
强迫性购买和暴食是两种经常同时出现的精神疾病。囤积症是一种过度收集和储存物品的心理需求，它通常与强迫性购买的严重程度和暴食的严重程度有关。在本研究中，我们探讨了囤积症的不同维度是否是强迫性购买和暴食的共同特征。
参与者包括 434 名寻求治疗强迫性购买障碍的人。注册精神科医生通过半结构化临床访谈确认了强迫性购买的诊断。参与者还完成了评估强迫性购买严重程度、暴食严重程度和囤积症维度（获取、难以丢弃和杂乱）的量表。其中 207 名参与者完成了所有三项测量。
强迫性购买严重程度与囤积症的获取维度之间存在显著相关性。暴食严重程度与囤积症的所有三个维度均显著相关。层次回归分析发现，强迫性购买严重程度是暴食严重程度的显著预测因子。然而，当同时在模型中包含囤积症的维度时，强迫性购买严重程度不再预测暴食严重程度。杂乱是回归分析第二步中唯一预测暴食严重程度的囤积症子量表。
我们的结果表明，过度收集和储存物品的心理需求可能构成一个共同的过程，这对于理解强迫性购买和暴食等过度消费行为的特征很重要。
