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Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment 1/2008

01-03-2008

The Milwaukee Inventory for Subtypes of Trichotillomania-Adult Version (MIST-A): Development of an Instrument for the Assessment of “Focused” and “Automatic” Hair Pulling

Auteurs: Christopher A. Flessner, Douglas W. Woods, Martin E. Franklin, Susan E. Cashin, Nancy J. Keuthen, Trichotillomania Learning Center-Scientific Advisory Board (TLC-SAB)

Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment | Uitgave 1/2008

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Abstract

This article describes the development of the Milwaukee Inventory for Subtypes of Trichotillomania-Adult Version (MIST-A), which was designed to assess “automatic” and “focused” pulling subtypes of trichotillomania (TTM). Participants reporting symptoms of TTM (n = 1,697) completed an internet survey; participants were later randomly assigned to either Exploratory (n = 848) or Confirmatory (n = 849) Analyses. Exploratory Analyses examined the development and psychometric properties of the MIST-A. Results of an exploratory factor analysis revealed a two-factor solution. Factor 1 (“focused” pulling scale) and 2 (“automatic” pulling scale) consisted of ten and five items respectively, with both scales demonstrating adequate internal consistency and good construct and discriminant validity. Subsequent confirmatory factor analysis demonstrated support for the scale’s underlying factor structure. The MIST-A provides researchers with a reliable and valid assessment of “automatic” and “focused” pulling, although replication using a clinically ascertained sample is necessary.
Voetnoten
1
Chi-square analyses and independent samples t tests were conducted to examine whether significant differences existed between participants randomly assigned to Exploratory or Confirmatory Analyses with respect to demographic characteristics and MIST-A scores. Results revealed no statistically significant differences between study participants with respect to gender, ethnicity, annual income, marital status, degree obtained, self-reported diagnosis of TTM, comorbid mental health concerns, age, years of education post high school, “focused” scale scores, or “automatic” scale scores.
 
2
Given the exceptionally large women to men ratio for individuals diagnosed with TTM cited in previous research (Christenson et al. 1991a, b), the development of gender-based norms for the MIST-A is not planned. As such, participants not specifying gender were included in all subsequent analyses.
 
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Metagegevens
Titel
The Milwaukee Inventory for Subtypes of Trichotillomania-Adult Version (MIST-A): Development of an Instrument for the Assessment of “Focused” and “Automatic” Hair Pulling
Auteurs
Christopher A. Flessner
Douglas W. Woods
Martin E. Franklin
Susan E. Cashin
Nancy J. Keuthen
Trichotillomania Learning Center-Scientific Advisory Board (TLC-SAB)
Publicatiedatum
01-03-2008
Uitgeverij
Springer US
Gepubliceerd in
Journal of Psychopathology and Behavioral Assessment / Uitgave 1/2008
Print ISSN: 0882-2689
Elektronisch ISSN: 1573-3505
DOI
https://doi.org/10.1007/s10862-007-9073-x

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