{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T01:32:41Z","timestamp":1781746361289,"version":"3.54.5"},"reference-count":47,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,1,26]],"date-time":"2017-01-26T00:00:00Z","timestamp":1485388800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J intellect Disabil Res"],"published-print":{"date-parts":[[2017,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>There are few valid and reliable psychological therapy outcome measures available for use with people with intellectual disabilities (ID). The current study involved the development of a new scale; the Psychological Therapies Outcome Scale \u2013 Intellectual Disabilities (PTOS\u2010ID), and the examination of its validity and internal consistency.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>The PTOS\u2010ID was administered to 175 people who have ID accessing specialist ID services. The construct validity of the scale was investigated through exploratory factor analysis, concurrent validity through comparison with the Brief Symptom Inventory and internal reliability through internal consistency analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Three factors emerged from the principal components analysis with high levels of internal consistency: (1) anger and mood (\u03b1\u00a0=\u00a00.82); (2) positive well\u2010being (\u03b1\u00a0=\u00a00.81); and (3) anxiety (\u03b1\u00a0=\u00a00.76). Factors (1) and (2) were combined to measure psychological distress (\u03b1\u00a0=\u00a00.85), which correlated strongly with the Global Severity Index of the Brief Symptom Inventory (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.85).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This preliminary study suggests that the PTOS\u2010ID is a psychometrically robust measure of psychological distress and psychological well\u2010being that can be used with people with ID. Further research is required to assess its reliability and ability to detect change.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jir.12361","type":"journal-article","created":{"date-parts":[[2017,1,26]],"date-time":"2017-01-26T06:36:37Z","timestamp":1485412597000},"page":"549-559","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Development and psychometric properties of the Psychological Therapies Outcome Scale \u2013 Intellectual Disabilities (PTOS\u2010ID)"],"prefix":"10.1111","volume":"61","author":[{"given":"N.","family":"Vlissides","sequence":"first","affiliation":[{"name":"Department of Psychology University of Liverpool  Liverpool UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N.","family":"Beail","sequence":"additional","affiliation":[{"name":"Barnsley Adult Specialist Learning Disability Health Service South West Yorkshire Partnership NHS Foundation Trust  Wakefield UK"},{"name":"Clinical Psychology Unit, Department of Psychology University of Sheffield  Sheffield UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Jackson","sequence":"additional","affiliation":[{"name":"Barnsley Adult Specialist Learning Disability Health Service South West Yorkshire Partnership NHS Foundation Trust  Wakefield UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K.","family":"Williams","sequence":"additional","affiliation":[{"name":"Barnsley Adult Specialist Learning Disability Health Service South West Yorkshire Partnership NHS Foundation Trust  Wakefield UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Golding","sequence":"additional","affiliation":[{"name":"Department of Psychology University of Liverpool  Liverpool UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,1,26]]},"reference":[{"key":"e_1_2_9_2_1","first-page":"1972","article-title":"Psychometric and demographic characteristics of the psychopathology instrument for mentally retarded adults","volume":"22","author":"Aman M. 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