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Psychosomatics. 2001 Sep-Oct;42(5):397-403.

The Skin Picking Impact Scale (SPIS): scale development and psychometric analyses.

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1
Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown 02129-2060, USA. keuthen@psych.mgh.harvard.edu

Abstract

The Skin Picking Impact Scale (SPIS) is a self-report instrument developed to assess the psychosocial consequences of repetitive skin picking. An initial 28-item scale was administered to 31 individuals with severe self-injurious skin picking and 78 individuals with non-self-injurious skin picking. Item difficulty levels and part-whole correlations resulted in a 10-item scale with good internal consistency. SPIS scores for those with self-injurious skin picking were significantly higher than for those with non-self-injurious skin picking. SPIS scores for those with self-injurious skin picking correlated with duration of daily picking, satisfaction during picking, and shame subsequent to picking, as well as Beck Depression Inventory and Beck Anxiety Inventory scores. Sensitivity and specificity analyses indicate that a scale cutoff score of 7 optimally discriminates individuals with self-injurious skin picking from those with non-self-injurious skin picking.

PMID:
11739906
DOI:
10.1176/appi.psy.42.5.397
[Indexed for MEDLINE]
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