Identifying transdiagnostic mechanisms that relate to nonsuicidal self-injury (NSSI), the intentional destruction of one’s own body tissue without suicidal intent and for purposes not culturally or socially sanctioned, is critical for the development and further refinement of NSSI-focused interventions. Accordingly, the present study aimed to characterize potential roles for anhedonia, repetitive negative thinking, and trait mindfulness as they relate to history of NSSI, NSSI urge-to-action, and NSSI functions. We hypothesized that these variables would relate to NSSI, NSSI urge-to-action, and explored correlations with functions of NSSI: interpersonal (i.e., reinforcement is social) and intrapersonal (e.g., reinforcement is self-focused) functions. Results indicated that greater anhedonia was related to history of NSSI. Among participants who reported history of NSSI, lower levels of trait mindfulness were associated with less time spent between NSSI urge and NSSI action. Finally, amongst participants who reported history of NSSI, interpersonal functions of NSSI were positively correlated with greater anhedonia, while intrapersonal NSSI function was positively correlated with higher levels of repetitive negative thinking, suggesting potential differential mechanisms that may contribute to the maintenance of NSSI. This work highlights transdiagnostic mechanisms that relate to history of NSSI, NSSI urge-to-action latency, and potential differential correlates of NSSI functions.

识别与非自杀性自伤 (NSSI) 相关的跨诊断机制，即无自杀意图且出于不受文化或社会认可的目的故意破坏自己的身体组织，对于制定和进一步完善以 NSSI 为重点的干预措施至关重要。因此，本研究旨在描述快感缺乏、重复消极思维和特质正念的潜在作用，因为它们与 NSSI 历史、NSSI 行动冲动和 NSSI 功能相关。我们假设这些变量与 NSSI、NSSI 行动冲动相关，并探讨了与 NSSI 功能的相关性：人际功能（即，强化是社交的）和内部功能（例如，强化是自我关注的）功能。结果表明，更大的快感缺失与 NSSI 病史有关。在报告有 NSSI 病史的参与者中，特质正念水平较低与 NSSI 冲动和 NSSI 行动之间花费的时间较短相关。最后，在报告有 NSSI 病史的参与者中，NSSI 的人际功能与更大的快感缺失呈正相关，而人际 NSSI 功能与更高水平的重复消极思维呈正相关，这表明可能有助于维持 NSSI 的潜在差异机制。这项工作强调了与 NSSI 历史、NSSI 冲动行动潜伏期以及 NSSI 功能的潜在差异相关性相关的跨诊断机制。