Abstract

Self-harming behavior (SHB) represents an important public health issue and is one of the most critical predictors of completed death by suicide. The current study evaluated the incremental contribution of the Interpersonal Theory of Suicide constructs of thwarted belongingness and perceived burdensomeness for the prediction of SHB beyond that associated with having a psychiatric diagnosis. Community adults from two different countries included a Portuguese sample of 414 adults, aged between 18 and 65 years (M = 45.09, SD = 13.11), and predominantly female (79%), and an American sample of 290 adults (198 men, 91 women, 1 unreported) with a mean age of 37.76 years (SD = 10.84) ranging from 20 to 71, who participated online. Results demonstrated mediation effects for perceived burdensomeness in the association of thwarted belongingness with SHB, partial mediation in the Portuguese sample and full mediation in the American sample. Findings also indicated that the interaction between thwarted belongingness and perceived burdensomeness failed to make a statistically significant contribution to the prediction of SHB. The results are discussed within the Interpersonal Theory of Suicide and its relevance for clinical practice.

摘要

自残行为 (SHB) 代表了一个重要的公共卫生问题，并且是自杀导致死亡的最关键预测因素之一。目前的研究评估了人际自杀理论构建受挫的归属感和感知负担对 SHB 预测的增量贡献，超出了与精神病诊断相关的预测。来自两个不同国家的社区成年人包括 414 名年龄在 18 至 65 岁之间 （M  =  45.09，SD  = 13.11），主要是女性（79%）的葡萄牙样本，以及 290 名成年人（198 名男性，91女性，1 名未报告），平均年龄为 37.76 岁（SD  = 10.84）从 20 到 71 不等，他们在线参与。结果表明，在受挫的归属感与 SHB、葡萄牙样本中的部分中介和美国样本中的完全中介的关联中，感知负担的中介效应。研究结果还表明，受挫的归属感和感知负担之间的相互作用未能对 SHB 的预测做出统计学上的显着贡献。结果在人际自杀理论及其与临床实践的相关性中进行了讨论。