Abstract
We report on the development of the Italian translation of the Schedule for Nonadaptive and Adaptive Personality-2 (SNAP-2). First, correspondence of the English and Italian versions was established through both the backtranslation method and administering both versions to a sample of 50 English-Italian bilingual participants. The translation’s psychometric properties were evaluated in 837 Italian community-dwelling adults (Sample 1) and 429 Italian psychiatric adults (Sample 2). The Italian SNAP-2 trait scales had adequate internal-consistency reliability and 6-month temporal stability in a sub-group (n = 97) of Sample 1 participants. The three-component factor structure of the 15 SNAP-2 trait scales replicated in both samples (median comparability coefficient = .96). The SNAP-2 trait scales in their Italian translation showed adequate nomological network validity with respect to Five Factor Model trait measures, self-reports and interview ratings of DSM-IV Axis II/DSM-5 Section II personality disorders and DSM-5 Section III dysfunctional personality domains.
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Data Availability
Data are available upon request, by sending an email to the corresponding author. Data cannot be made publicly available, because this was not explicitly approved by the participants at the moment of assessment.
Notes
Eccentric Perceptions also loaded on Compulsivity/Anankastia but loads on a Psychoticism factor when factored with other measures (e.g., the PID-5) that have better Psychoticism representation(e.g., Watson et al. (2013).
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Somma, A., Clark, L.A. & Fossati, A. Psychometric Properties of the Schedule for Nonadaptive and Adaptive-2 (SNAP-2) in Italian Community Adults and Psychiatric Patients. J Psychopathol Behav Assess (2024). https://doi.org/10.1007/s10862-024-10125-4
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DOI: https://doi.org/10.1007/s10862-024-10125-4