title: The assessment of skin picking in adolescence: psychometric properties of the Skin Picking Scale-Revised (German version).
abstract: BACKGROUND
  Skin picking disorder has received growing attention since the release of DSM-5, yet there are no evidence-based assessment instruments for adolescent samples.
  
  
  OBJECTIVE
  The present study examines the psychometric properties of the Skin Picking Scale-Revised (SPS-R, German version) in adolescents.
  
  
  METHODS
  A total of 76 adolescents (96% female) completed the SPS-R, the Clinical Psychological Diagnostic System (KPD-38), and a questionnaire assessing demographics and clinical characteristics online.
  
  
  RESULTS
  The SPS-R had high internal consistency (α = 0.89) and significant small-to-medium correlations with reduced competence skills, psychological impairment, general life satisfaction, social support, and social problems on the KPD-38. Similar to prior findings for adults, an exploratory factor analysis suggested a two-factor model for the SPS-R in adolescents. Group comparisons failed to show significant differences on SPS-R scores between participants with and without dermatological conditions.
  
  
  CONCLUSIONS
  The current results suggest that the SPS-R can be useful in adolescent samples as a reliable and valid instrument for the assessment of skin picking severity. Future research investigating scale validity and factor structure in a clinical sample of adolescent skin pickers is warranted.
authors.affiliation: a Center for Psychotherapy Research , University Hospital Heidelberg , Heidelberg , Germany.
authors.forename: Christina
authors.initials: C
authors.lastname: Gallinat
authors.affiliation: b Department of Psychiatry, Massachusetts General Hospital/Harvard Medical School , Boston , MA , USA.
authors.forename: Nancy J
authors.initials: NJ
authors.lastname: Keuthen
authors.affiliation: c General Psychiatry , University Hospital Heidelberg , Heidelberg , Germany.
authors.forename: Annette
authors.initials: A
authors.lastname: Stefini
authors.affiliation: d Institute of Clinical Psychology, Hospital Stuttgart , Stuttgart , Germany.|e Institute of Psychology, Department of Clinical Psychology and Psychotherapy , Heidelberg University , Heidelberg , Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Backenstrass
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D007174:Disruptive, Impulse Control, and Conduct Disorders / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000295:instrumentation*; D015203:Reproducibility of Results; D012652:Self Mutilation / Q000175:diagnosis*; D012867:Skin
keywords: Excoriation; adolescence; reliability; skin picking scale; validity