Psychometric properties of the excoriation (skin-picking disorder) dimensional scale

Angela Russell, Andrea del Pozo de Bolger, Karen Moses, Aileen Luo, Bethany M. Wootton*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Objective: The Excoriation (skin-picking disorder) dimensional scale (SPD-D) is a new measure of excoriation skin picking disorder (SPD). The 5-item scale was developed by the Diagnostic and Statistical Manual (Fifth Edition) obsessive–compulsive spectrum disorders sub-workgroup to assist in the dimensional assessment of SPD. Method: The aim of the present study was to provide a psychometric evaluation of this new scale in a large community sample. 803 participants were recruited from online community noticeboards around Australia. Results: The results indicated that the SPD-D demonstrated a unidimensional structure, high internal consistency (rs =.87,.86, and.92 across three samples), and good test–retest reliability (rs =.86). The SPD-D also demonstrated good convergent validity with the Skin-Picking Scale Revised (rs =.90) as well as divergent validity with the generalised anxiety disorder scale (rs =.40). Conclusions: Overall, the SPD-D appears to be a brief and reliable measure of SPD symptomatology.

Original languageEnglish
Pages (from-to)246-253
Number of pages8
JournalClinical Psychologist
Issue number3
Publication statusPublished - Nov 2020
Externally publishedYes


  • dimensional scale
  • DSM-5
  • excoriation disorder
  • psychometric properties
  • skin-picking disorder
  • SPD-D

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