Supplemental Material for Psychometric Properties and Prognostic Usefulness of the Youth Psychopathic Traits Inventory (YPI) as a Component of a Clinical Protocol for Detained Youth: A Multiethnic Examination

2017 ◽  
Keyword(s):  
Psychometric Properties ◽  
Psychopathic Traits ◽  
Clinical Protocol ◽  
Youth Psychopathic Traits Inventory

scholarly journals Psychometric properties of the German version of the Youth Psychopathic traits Inventory – short version

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Cyril Boonmann ◽  
Tania Pérez ◽  
Marc Schmid ◽  
Jörg M. Fegert ◽  
Emanuel Jauk ◽  
...  
Keyword(s):  
Psychometric Properties ◽  
Mental Health Problems ◽  
Screening Instrument ◽  
Psychopathic Traits ◽  
Self Report ◽  
Three Dimensions ◽  
Short Version ◽  
German Version ◽  
German Speaking ◽  
Youth Psychopathic Traits Inventory

Abstract Background The aim of the current study is to examine the psychometric properties of the German Version of the Youth Psychopathic traits Inventory-Short Version (YPI-S). Methods A sample of 856 adolescents (age: 15–19) from the German-speaking part of Switzerland was included. All participants completed the 50-item YPI, of which we derived the 18 items of the YPI-S. Furthermore, participants completed the Massachusetts Youth Screening Instrument-Version-2 (MAYSI-2), as well a self-report delinquency questionnaire. Results We were able to replicate a three-factor structure and found moderate to good internal consistency for the total score as well as for the three dimensions of the YPI-S. Measurement invariance across gender was established. Furthermore, we found positive small to medium correlations with both internalizing and externalizing mental health problems, substance abuse problems, and offending behavior. Conclusions Our results suggest that the German version of the YPI-S is a reliable and valid screening instrument for psychopathic traits in both boys and girls from the general population in the German-speaking part of Switzerland.

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