Examining the factor structure of the 40-item Defense Style Questionnaire among adults with depression: an individual participant data meta-analysis.

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Title: Examining the factor structure of the 40-item Defense Style Questionnaire among adults with depression: an individual participant data meta-analysis.
Authors: Wienicke FJ; Department of Clinical Psychology, Behavioral Science Institute, Radboud University, Nijmegen., Burk WJ; Department of Developmental Psychology, Behavioral Science Institute, Radboud University, Nijmegen., Heinonen E; Department of Psychology, University of Oslo, Norway; Finnish Institute for Health and Welfare, Helsinki., Lindfors O; Finnish Institute for Health and Welfare, Helsinki., Härkänen T; Finnish Institute for Health and Welfare, Helsinki., Knekt P; Finnish Institute for Health and Welfare, Helsinki., Sarvasmaa S; Helsinki University Hospital., Dias de Mattos Souza L; Department of Health and Behavior, Catholic University of Pelotas., Jansen K; Department of Health and Behavior, Catholic University of Pelotas., Azevedo da Silva R; Department of Health and Behavior, Catholic University of Pelotas., Nobre Dos Santos É; Department of Health and Behavior, Catholic University of Pelotas., Dekker JJM; Department of Research, Arkin Mental Health Care, Amsterdam; Department of Clinical, Neuro and Developmental Psychology, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam., Peen J; Department of Research, Arkin Mental Health Care, Amsterdam., Van HL; NPI, Arkin Mental Health Care, Amsterdam., Perry JC; Department of Psychiatry, McGill University, Institute of Community & Family Psychiatry, Jewish General Hospital, Montreal., Van der Veld WM; Department of Developmental Psychology, Behavioral Science Institute, Radboud University, Nijmegen., Soares E; Department of Clinical Psychology, Behavioral Science Institute, Radboud University, Nijmegen., Spijker J; Department of Clinical Psychology, Behavioral Science Institute, Radboud University, Nijmegen; Depression Expertise Center, Pro Persona Mental Health Care, Nijmegen., Driessen E; Department of Clinical Psychology, Behavioral Science Institute, Radboud University, Nijmegen; Depression Expertise Center, Pro Persona Mental Health Care, Nijmegen.
Source: Research in psychotherapy (Milano) [Res Psychother] 2026 Apr 30; Vol. 29 (1). Date of Electronic Publication: 2026 Feb 16.
Publication Type: Journal Article
Journal Info: Publisher: PagePress Country of Publication: Italy NLM ID: 101684638 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2239-8031 (Electronic) Linking ISSN: 22398031 NLM ISO Abbreviation: Res Psychother Subsets: PubMed not MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:2239-8031
DOI:10.4081/ripppo.2026.887