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Scalability of the Positive and Negative Syndrome Scale in first‐episode schizophrenia assessed by Rasch models

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Historically, assessment of the psychometric properties of the Positive and Negative Syndrome Scale (PANSS) has had several foci: (1) calculation of reliability indexes, (2) extraction of subdimensions from the scale,… Click to show full abstract

Historically, assessment of the psychometric properties of the Positive and Negative Syndrome Scale (PANSS) has had several foci: (1) calculation of reliability indexes, (2) extraction of subdimensions from the scale, and (3) assessment of the validity of the total score. In this study, we aimed to examine the scalability and to assess the clinical performance of the 30‐item PANSS total score as well as the scalability of a shorter version (PANSS‐6) of the scale.

Keywords: syndrome scale; scale; scalability positive; positive negative; negative syndrome

Journal Title: Acta Psychiatrica Scandinavica
Year Published: 2022

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