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The current analysis involves an examination of the longitudinal relationships between rumination, worry and OCD symptom changes during mindfulness treatment, in comparison to a waitlist control.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Participants experiencing OCD (<jats:italic>n<\/jats:italic>\u2009=\u200971) were randomly assigned to 8\u2009weeks of (1) TSM or (2) waitlist control. We tested the extent to which rumination (using the Ruminative Response Scale) and worry (using the Penn State Worry Questionnaire) are associated with OCD symptom changes during the acute phase of treatment, concurrently (i.e., within the same longitudinal model).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Generalized linear model (GLM) results indicated a significant time (week 1 vs. week 8) by condition interaction involving decreased rumination in the TSM condition: <jats:italic>F<\/jats:italic>(1, 61)\u2009=\u200913.37, <jats:italic>p<\/jats:italic>\u2009=\u20090.001, partial \u03b7<jats:sup>2<\/jats:sup>\u2009=\u20090.18 and observed power\u2009=\u20090.94. A second GLM demonstrated decreased worry in the TSM condition: <jats:italic>F<\/jats:italic>(1, 69)\u2009=\u200937.34, <jats:italic>p<\/jats:italic>\u2009=\u20090.001, partial \u03b7<jats:sup>2<\/jats:sup>\u2009=\u20090.35 and observed power\u2009=\u20090.83. Longitudinal \u2018latent difference\u2019 structural equation analyses demonstrated a cross\u2010lagged association between worry (but not rumination) and OCD symptom changes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Individuals in the TSM condition experienced greater reductions in rumination and worry during 8\u2009weeks of TSM treatment compared to the waitlist control, and reduced worry predicted subsequent OCD symptom reduction.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cpp.3018","type":"journal-article","created":{"date-parts":[[2024,7,1]],"date-time":"2024-07-01T09:39:03Z","timestamp":1719826743000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The Relationship of Rumination, Worry and OCD Symptoms During Technology Supported Mindfulness Therapy for OCD"],"prefix":"10.1002","volume":"31","author":[{"given":"Lance\u00a0L.","family":"Hawley","sequence":"first","affiliation":[{"name":"Frederick W. 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