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J Behav Ther Exp Psychiatry. 2009 Mar;40(1):127-35. doi: 10.1016/j.jbtep.2008.07.002. Epub 2008 Jul 19.

The Milwaukee Inventory for the Dimensions of Adult Skin Picking (MIDAS): initial development and psychometric properties.

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Department of Psychology, University of Wisconsin-Milwaukee, 224 Garland Hall, 2441 E. Hartford Avenue, Milwaukee, WI 53211, USA.


This article describes the development and initial psychometric properties of the Milwaukee Inventory for the Dimensions of Adult Skin picking (MIDAS), a measure designed to assess "automatic" and "focused" skin picking. Data were collected from 92 participants who completed an anonymous internet-based survey. Results of an exploratory factor analysis revealed a two-factor solution. Factors 1 ("focused" picking scale) and 2 ("automatic" picking scale) each consisted of 6 items, and preliminary data demonstrated adequate internal consistency, good construct validity, and good discriminant validity. The MIDAS provides researchers with a reliable and valid assessment of "automatic" and "focused" skin picking.

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