Measures
Nonsuicidal Self-injury. The Deliberate Self-Harm Inventory (DSHI; Gratz, 2001) was used to determine the presence of NSSI history. The DSHI is a behaviorally-based self-report questionnaire that assesses the lifetime frequency, severity, duration, and type of NSSI behaviors across 16 methods (e.g., cutting, burning, severe scratching, etc.); participants were determined to have a lifetime history of NSSI if they reported having ever engaged in NSSI during their lifetime. The psychometric properties of the DSHI have been supported (Gratz, 2001).
Emotion Dysregulation. The Difficulties in Emotion Regulation Scale (DERS; Gratz & Roemer, 2004) total score was also utilized in this sample. Total scores in this sample demonstrated adequate internal consistency (α = .89).
Interpersonal Stressor Interview. As part of a larger procedure to develop an idiographic emotion induction script (Dixon-Gordon, Waite, et al., 2021) and consistent with past research (Gratz et al., 2011), participants were asked to describe a recent upsetting interpersonal conflict, and were encouraged to describe an interaction in the context of an ongoing relationship. Participants underwent a semi-structured interview about a recent upsetting interpersonal conflict, wherein they were asked specific details about the event (e.g., location), as well as specific emotions, physical sensations, and thoughts that occurred at the time of the conflict. Each interview took approximately 20 to 45 minutes to complete. All interviews were transcribed verbatim for use in the current study.