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Namely, general factors are suitable for broadband measurement, which has become increasingly important due to efforts to standardize outcome measurement. Reasons for measuring general factors include their predictive validity, relatability to parallel research in epidemiology, genetics and neurobiology, simplicity due to unidimensionality, longitudinal structural validity and potential for capturing transdiagnostic change. Psychotherapy register data (\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u20095223; 4059, 77.7%, identify as female) of Finnish speaking adult patients entering psychological therapy were used to compare three patient self\u2010report inventories suggested for routine use\u2014Patient Health Questionnaire\u20109 (PHQ\u20109), Clinical Outcomes in Routine Evaluation\u2013Outcome Measure (CORE\u2010OM) and CORE\u201010\u2014as measures of a general internalizing pathology factor. A multidimensional factor model was estimated, and noise factors were marginalized out of the analysis. Fisher information about internalizing was computed for each inventory. CORE\u2010OM had high total Fisher information about internalizing, but per item information was markedly lower compared to CORE\u201010. Surprisingly, though not included a priori in the set of compared inventories, the Overall Anxiety Severity and Impairment Scale (OASIS) was as effective as CORE\u201010 per item, though OASIS provided low total information due to only comprising five items and was confounded by an anxiety specific factor. PHQ\u20109 did not perform well as a measure of internalizing. Results suggested CORE\u201010 to be a valid, brief, option for broadband outcome measurement in psychological therapies.\n                  <\/jats:p>","DOI":"10.1002\/cpp.70270","type":"journal-article","created":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T07:54:33Z","timestamp":1776239673000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparison of Commonly Applied Outcome Inventories as Measures of General Internalizing Pathology in Psychological Therapies"],"prefix":"10.1002","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1265-7734","authenticated-orcid":false,"given":"Sakari\u00a0J.","family":"Lintula","sequence":"first","affiliation":[{"name":"Department of Psychology, Faculty of Medicine University of Helsinki  Helsinki Finland"},{"name":"HUS Helsinki University Hospital and University of Helsinki  Helsinki Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3555-9958","authenticated-orcid":false,"given":"Suoma\u00a0E.","family":"Saarni","sequence":"additional","affiliation":[{"name":"HUS Helsinki University Hospital and University of Helsinki  Helsinki Finland"},{"name":"Tampere University  Tampere Finland"},{"name":"P\u00e4ij\u00e4t\u2010H\u00e4me Wellbeing County  Lahti Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1687-6376","authenticated-orcid":false,"given":"Michael","family":"Barkham","sequence":"additional","affiliation":[{"name":"School of Psychology University of Sheffield  Sheffield UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8277-3776","authenticated-orcid":false,"given":"Tom\u00a0H.","family":"Rosenstr\u00f6m","sequence":"additional","affiliation":[{"name":"Department of Psychology, Faculty of Medicine University of Helsinki  Helsinki Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,4,15]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1037\/h0093906"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpp.13113"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2215\u20100366(20)30488\u20100"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/14733145.2012.729069"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/10503307.2023.2181114"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/14733140600581218"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1080\/10503307.2025.2541710"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1177\/2167702613505532"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/10503307.2013.817696"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jad.2016.05.005"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1001\/archinte.158.16.1789"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jad.2008.03.014"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1177\/21677026221147872"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41386\u2010020\u201000952\u2010w"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1037\/a0029598"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.180.1.51"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1001\/jamapsychiatry.2023.2282"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2215\u20100366(23)00139\u20106"},{"key":"e_1_2_12_20_1","volume-title":"Common Measures for Mental Health Science","author":"Farber G. 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