title: The Milwaukee Inventory for Styles of Trichotillomania-Child Version (MIST-C): initial development and psychometric properties.
abstract: This article describes the development and initial psychometric properties of the Milwaukee Inventory for Styles of Trichotillomania-Child Version (MIST-C), a self-report scale designed to assess styles of hair pulling in children and adolescents diagnosed with trichotillomania (TTM). Using Internet sampling procedures, the authors recruited 164 parent-child dyads, the children of whom met modified diagnostic criteria for TTM. The MIST-C was administered in the context of a larger survey examining functional impairment experienced by children with TTM. Results of an exploratory factor analysis on MIST-C items revealed a two-factor solution. Factors 1 ("focused" pulling scale) and 2 ("automatic" pulling scale) consisted of 21 and 4 items, respectively, with both scales demonstrating acceptable internal consistency and good construct and discriminant validity. The development of the MIST-C provides researchers with a reliable and valid assessment of "automatic" and "focused" pulling, and provides a means by which to examine the developmental trajectory and treatment implications of these pulling styles.
authors.affiliation: University of Wisconsin-Milwaukee, USA.
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Flessner
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Woods
authors.forename: Martin E
authors.initials: ME
authors.lastname: Franklin
authors.forename: Nancy J
authors.initials: NJ
authors.lastname: Keuthen
authors.forename: John
authors.initials: J
authors.lastname: Piacentini
authors.forename: Susan E
authors.initials: SE
authors.lastname: Cashin
authors.forename: Phoebe S
authors.initials: PS
authors.lastname: Moore
mesh_terms: D000293:Adolescent; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D010287:Parent-Child Relations; D011594:Psychometrics; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D014256:Trichotillomania / Q000175:diagnosis / Q000628:therapy