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date: 29 November 2020

Abstract and Keywords

This chapter provides guidance regarding the assessment of nonsuicidal self-injury (NSSI). Assessors are encouraged to enhance rapport through “respectful curiosity” and a “low-key, dispassionate demeanor.” The assessment should cover several aspects of NSSI, including personal history of NSSI (e.g., methods, frequency, medical severity), social history of NSSI (e.g., roles of peers, family members), the contextual features (e.g., environmental, cognitive, affective, biological factors), concomitant risky behaviors (e.g., substance use), the functions of NSSI (e.g., affect regulation, other intrapersonal and social functions), and suicide risk. When feasible, assessors should utilize valid instruments to aid in the assessment of NSSI. Valid omnibus measures include the Suicide Attempt Self-Injury Interview (SASII; Linehan, Comtois, Brown, Heard, & Wagner, 2006) and the Self-Injurious Thoughts and Behaviors Interview (SITBI; Nock, Joiner, Gordon, Lloyd-Richardson, & Prinstein, 2006). Valid functional measures include the Functional Assessment of Self-Mutilation (FASM; Lloyd-Richardson, Kelley, & Hope, 1997) and the Inventory of Statements About Self-Injury (ISAS; Klonsky & Glenn, 2009).

Keywords: nonsuicidal self-injury, self-harm, assessment, measurement, interview, case formulation, risk assessment

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