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We used Cronbach's \u03b1 to assess internal consistency; intra\u2010class correlation (ICC<\/jats:styled-content>) for inter\u2010rater reliability; Spearman's rho for convergent validity with the Young Mania Rating Scale (YMRS<\/jats:styled-content>), General Behavior Inventory\u201310\u2010item Mania Form (GBI<\/jats:styled-content>\u2010M\u201010), and Cyclothymic\u2013Hypersensitive Temperament (CHT<\/jats:styled-content>) scale; and analysis of variance<\/jats:styled-content> for discriminatory power between diagnostic groups.<\/jats:p><\/jats:sec>Results<\/jats:title>Internal consistency was good to very good for the BPSS<\/jats:styled-content>\u2010P Mania (Cronbach's \u03b1\u00a0=\u00a00.87), Depression (Cronbach's \u03b1\u00a0=\u00a00.89), and General Symptom indices (Cronbach's \u03b1\u00a0=\u00a00.74). Inter\u2010rater reliability was high for the BPSS<\/jats:styled-content>\u2010P Total score (ICC<\/jats:styled-content>\u00a0=\u00a00.939), and BPSS<\/jats:styled-content>\u2010P Mania (ICC<\/jats:styled-content>\u00a0=\u00a00.934), Depression (ICC<\/jats:styled-content>\u00a0=\u00a00.985), and General (ICC<\/jats:styled-content>\u00a0=\u00a00.981) indices. Convergent validity was large (\u03c1\u00a0\u2265\u00a00.50) between the BPSS<\/jats:styled-content>\u2010P Mania Index and YMRS<\/jats:styled-content>, GBI<\/jats:styled-content>\u2010M\u201010, and CHT<\/jats:styled-content>; BPSS<\/jats:styled-content>\u2010P Depression Index and Montgomery\u2013\u00c5sberg Depression Rating Scale (MADRS)<\/jats:styled-content> and CHT<\/jats:styled-content>; and BPSS<\/jats:styled-content>\u2010P General Index and GBI<\/jats:styled-content>\u2010M\u201010 and CHT<\/jats:styled-content>. Expectedly, convergent validity was small (\u03c1\u00a0=\u00a00.10 to < 0.30) between the BPSS<\/jats:styled-content>\u2010P Mania Index and MADRS<\/jats:styled-content>, and BPSS<\/jats:styled-content>\u2010P Depression Index and YMRS<\/jats:styled-content>. Furthermore, the BPSS<\/jats:styled-content>\u2010P and its subscales discriminated each patient group from HC<\/jats:styled-content>s and from non\u2010mood spectrum patients (except for the BPSS<\/jats:styled-content>\u2010P General Index). Moreover, the BPSS<\/jats:styled-content>\u2010P Total score discriminated BD<\/jats:styled-content>\u2010I\/BD<\/jats:styled-content>\u2010II<\/jats:styled-content>\/cyclothymia from depression spectrum patients, and the BPSS<\/jats:styled-content>\u2010Mania Index differentiated all three bipolar spectrum groups from depression spectrum patients.<\/jats:p><\/jats:sec>Conclusions<\/jats:title>The BPSS<\/jats:styled-content>\u2010P has good to excellent psychometric properties. Its use across multiple settings and predictive validity requires further investigation.<\/jats:p><\/jats:sec>","DOI":"10.1111\/bdi.12209","type":"journal-article","created":{"date-parts":[[2014,5,8]],"date-time":"2014-05-08T09:17:40Z","timestamp":1399540660000},"page":"505-522","source":"Crossref","is-referenced-by-count":100,"title":["The Bipolar Prodrome Symptom Interview and Scale\u2013Prospective (BPSS<\/scp>\u2010P): description and validation in a psychiatric sample and healthy controls"],"prefix":"10.1111","volume":"16","author":[{"given":"Christoph U","family":"Correll","sequence":"first","affiliation":[{"name":"The Zucker Hillside Hospital Psychiatry Research North Shore\u2013Long Island Jewish Health System Glen Oaks NY USA"},{"name":"Hofstra North Shore\u2013LIJ School of Medicine Hempstead NY USA"},{"name":"The Feinstein Institute for Medical Research North Shore\u2013Long Island Jewish Health System Glen Oaks NY USA"},{"name":"Albert Einstein College of Medicine Bronx NY 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