The present study investigated the (co-)occurrence of non-suicidal self-injury (NSSI) and pathological buying (PB) and their associations with reactive/regulative temperament in a sample of female patients with eating disorders (ED) and in a sample of community adults. Our samples consisted of 254 community adults (48.8% female) and 60 female patients with ED. All participants filled out self-report questionnaires to assess NSSI, PB, and reactive/regulative temperament. Prevalence rates of NSSI and PB were respectively 14.5% and 4.8% for community women, 13.1% and 1.5% for community men, and 36.7% and 10% for female patients with ED. Only for community women, NSSI was positively related to PB. NSSI was negatively related to self-regulation in community men and women. Additionally, NSSI was negatively predicted by BAS reactivity in the clinical sample and by the interaction of BAS reactivity and self-regulation in community men. PB was predicted by low self-regulation in the three groups. Additionally, PB was positively predicted by BAS reactivity and by the interaction of BAS reactivity and self-regulation in community women. These findings indicated group differences in the (co-)occurrence of NSSI and PB and in their associations with underlying temperamental characteristics between individuals with and without ED.

中文翻译：

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社区成年人和饮食失调患者的非自杀性自残和病理性购买：与反应性和调节性气质的关联


本研究调查了饮食失调女性患者（ED）样本和样本中非自杀性自伤（NSSI）和病理性购买（PB）的（共同）发生及其与反应性/调节性气质的关联。的社区成年人。我们的样本包括 254 名社区成年人（48.8% 为女性）和 60 名女性 ED 患者。所有参与者都填写了自我报告问卷，以评估 NSSI、PB 和反应性/调节性气质。社区女性NSSI和PB患病率分别为14.5%和4.8%，社区男性为13.1%和1.5%，女性ED患者为36.7%和10%。仅对于社区女性，NSSI 与 PB 呈正相关。 NSSI 与社区男性和女性的自我调节呈负相关。此外，临床样本中的 BAS 反应性以及社区男性中 BAS 反应性和自我调节的相互作用对 NSSI 进行了负面预测。 PB 是通过三组的低自我调节来预测的。此外，BAS 反应性以及 BAS 反应性和社区妇女自我调节的相互作用可以积极预测 PB。这些发现表明，在患有和未患有 ED 的个体之间，NSSI 和 PB 的（同时）发生及其与潜在气质特征的关联存在群体差异。