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Individuals at clinical high\u2010risk for psychosis (CHR) frequently experience paranoia and this may elevate their risk for developing full psychosis. Nonetheless, limited work has examined the efficient measurement of paranoia in CHR individuals. The present study aimed to validate an often\u2010used self\u2010report measure, the revised green paranoid thoughts scale (RGPTS), in this critical population.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>\n                      Participants were CHR individuals (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a0103), mixed clinical controls (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a080), and healthy controls (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a071) who completed self\u2010report and interview measures. Confirmatory factor analysis (CFA), psychometric indices, group differences, and relations to external measures were used to evaluate the reliability and validity of the RGPTS.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      CFA replicated a two\u2010factor structure for the RGPTS and the associated\n                      <jats:italic>reference<\/jats:italic>\n                      and\n                      <jats:italic>persecution<\/jats:italic>\n                      scales were reliable. CHR individuals scored significantly higher on both\n                      <jats:italic>reference<\/jats:italic>\n                      and\n                      <jats:italic>persecution<\/jats:italic>\n                      , relative to both healthy (\n                      <jats:italic>d<\/jats:italic>\n                      s\u00a0=\u00a01.03, 0.86) and clinical controls (\n                      <jats:italic>d<\/jats:italic>\n                      s\u00a0=\u00a00.64, 0.73). In CHR participants, correlations between\n                      <jats:italic>reference<\/jats:italic>\n                      and\n                      <jats:italic>persecution<\/jats:italic>\n                      and external measures were smaller than expected, though showed evidence of discriminant validity (e.g., interviewer\u2010rated paranoia,\n                      <jats:italic>r<\/jats:italic>\n                      \u00a0=\u00a00.24). When examined in the full sample, correlation magnitude was larger and follow\u2010up analyses indicated that\n                      <jats:italic>reference<\/jats:italic>\n                      related most specifically to paranoia (\n                      <jats:italic>\u03b2<\/jats:italic>\n                      \u00a0=\u00a00.32), whereas\n                      <jats:italic>persecution<\/jats:italic>\n                      uniquely related to poor social functioning (\n                      <jats:italic>\u03b2<\/jats:italic>\n                      \u00a0=\u00a0\u22120.29).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>These results demonstrate the reliability and validity of the RGPTS, though its scales related more weakly to severity in CHR individuals. The RGPTS may be useful in future work aiming to develop symptom\u2010specific models of emerging paranoia in CHR individuals.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/acps.13545","type":"journal-article","created":{"date-parts":[[2023,3,11]],"date-time":"2023-03-11T09:53:10Z","timestamp":1678528390000},"page":"623-633","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The reliability and validity of the revised Green et al. paranoid thoughts scale in individuals at clinical high\u2010risk for psychosis"],"prefix":"10.1111","volume":"147","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2202-7020","authenticated-orcid":false,"given":"Trevor F.","family":"Williams","sequence":"first","affiliation":[{"name":"Department of Psychology Northwestern University  Evanston Illinois 60208 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elaine F.","family":"Walker","sequence":"additional","affiliation":[{"name":"Department of Psychology and Program in Neuroscience Emory University  Atlanta Georgia 30322 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregory P.","family":"Strauss","sequence":"additional","affiliation":[{"name":"Departments of Psychology and Neuroscience University of Georgia  Athens Georgia 30602 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott W.","family":"Woods","sequence":"additional","affiliation":[{"name":"Department of Psychiatry Yale University  New Haven Connecticut 06519 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3057-5043","authenticated-orcid":false,"given":"Albert R.","family":"Powers","sequence":"additional","affiliation":[{"name":"Department of Psychiatry Yale University  New Haven Connecticut 06519 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip R.","family":"Corlett","sequence":"additional","affiliation":[{"name":"Department of Psychiatry Yale University  New Haven Connecticut 06519 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason","family":"Schiffman","sequence":"additional","affiliation":[{"name":"Department of Psychological Science, 4201 Social and Behavioral Sciences Gateway University of California  Irvine California 92697 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James A.","family":"Waltz","sequence":"additional","affiliation":[{"name":"Maryland Psychiatric Research Center, Department of Psychiatry University of Maryland School of Medicine  Baltimore Maryland 21228 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James M.","family":"Gold","sequence":"additional","affiliation":[{"name":"Maryland Psychiatric Research Center, Department of Psychiatry University of Maryland School of Medicine  Baltimore Maryland 21228 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven M.","family":"Silverstein","sequence":"additional","affiliation":[{"name":"Departments of Psychiatry, Neuroscience and Ophthalmology University of Rochester Medical Center  Rochester New York 14642 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauren M.","family":"Ellman","sequence":"additional","affiliation":[{"name":"Department of Psychology &amp; 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