Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Dul, Jan" or (type any "bookEditor issueEditor" and editor="Dul, Jan") Add to list Journal Article A1 open access Necessity causality in mental health research : applying necessary condition analysis in clinical psychology and psychiatry Igor Marchetti, Ernst Koster (UGent) and Jan Dul (2026) CLINICAL PSYCHOLOGY REVIEW. 123.