title: One-year test-retest reliability of the Inventory of Statements about Self-Injury (ISAS).
abstract: Nonsuicidal self-injury (NSSI) is a growing public health problem among adolescents and young adults. The Inventory of Statements About Self-Injury (ISAS) is a self-report measure designed to assess NSSI behaviors and functions. The current study examines the one-year test-retest reliability of the ISAS in a sample of young adult self-injurers. Results indicate that the ISAS behavioral and functional scales demonstrate good stability over one year. For the behavioral scales, test-retest correlations ranged from .52 (biting) to .83 (burning), with a median of .68. For the functional scales, test-retest correlations were .60 for the superordinate intrapersonal functions scale and .82 for the superordinate interpersonal functions scale. Regarding individual functions, test-retest correlations ranged from .35 (affect regulation) to .89 (peer bonding), with a median of .59. Findings suggest the ISAS has good test-retest reliability and contributes to the growing literature on the psychometric properties of the ISAS.
authors.affiliation: Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA. cassie.glenn@gmail.com
authors.forename: Catherine R
authors.initials: CR
authors.lastname: Glenn
authors.forename: E David
authors.initials: ED
authors.lastname: Klonsky
mesh_terms: D000367:Age Factors; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D010556:Personality Tests; D011594:Psychometrics / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D018570:Risk Assessment; D057566:Self Report; D016728:Self-Injurious Behavior / Q000175:diagnosis / Q000523:psychology*; D013223:Statistics as Topic; D013997:Time Factors; D055815:Young Adult