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dc.contributor.authorLüdtke, Thies
dc.contributor.authorPfuhl, Gerit
dc.contributor.authorMoritz, Steffen
dc.contributor.authorRuegg, Nina
dc.contributor.authorBerger, Thomas
dc.contributor.authorWestermann, Stefan
dc.date.accessioned2021-01-08T08:35:26Z
dc.date.available2021-01-08T08:35:26Z
dc.date.issued2020-12-10
dc.description.abstract<p><i>Objective - </i>Experience sampling assessments (multiple assessments per day for approximately one week) indicate that positive symptoms fluctuate over time in psychosis. Precursors, such as sleep problems or worrying, predict these fluctuations. To date, it remains unclear whether the same precursors predict symptom variability also during treatment in an online intervention for psychosis, using assessments lying temporally further apart. <p><i>Methods - </i>Participants completed brief intermediate online self‐report assessments on their computers (up to every 7 days during a 2‐month waiting period and up to twice every 6 days during a 2‐month intervention period) within a randomized controlled trial. We monitored the course of paranoia, auditory verbal hallucinations, and their theory‐driven precursors worrying, negative affect, self‐esteem, self‐reported cognitive biases, and quality of sleep in n = 124 participants (M = 10.32 assessments per participant; SD = 6.07). We tested group differences regarding the course of the composite of precursors, group differences regarding the effect of the composite on subsequent momentary psychotic symptoms, and the effect of each individual precursor on subsequent psychotic symptoms, using (lagged) linear mixed models. <p><i>Results - </i>The course composite precursors over time and their lagged effect on subsequent momentary psychotic symptoms did not differ between groups. During the intervention, increased worrying and decreased quality of sleep preceded heightened momentary psychotic symptoms. <p><i>Conclusion - </i>The regression‐based design does not allow drawing causal conclusions. However, worrying and sleep problems likely represent underlying mechanisms of psychotic symptom variability during online psychosis treatment, indicating that experience sampling findings from everyday life generalize to interventions with assessments lying several days apart.en_US
dc.identifier.citationLüdtke T, Pfuhl G, Moritz S, Ruegg N, Berger T, Westermann S. Sleep problems and worrying precede psychotic symptoms during an online intervention for psychosis. British Journal of Clinical Psychology. 2020en_US
dc.identifier.cristinIDFRIDAID 1863106
dc.identifier.doi10.1111/bjc.12270
dc.identifier.issn0144-6657
dc.identifier.issn2044-8260
dc.identifier.urihttps://hdl.handle.net/10037/20210
dc.language.isoengen_US
dc.publisherJohn Wiley & Sons Ltd on behalf of British Psychological Societyen_US
dc.relation.ispartofLüdtke, T. (2021). Identifying and treating predictors of psychotic symptoms - How findings from Experience Sampling research can help to improve the treatment of psychosis and the prediction of relapse. (Doctoral thesis). <a href=https://hdl.handle.net/10037/21190>https://hdl.handle.net/10037/21190</a>
dc.relation.journalBritish Journal of Clinical Psychology
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRIMEDBIO/262338/Norway/Too precise or too imprecise: which parameter is gone awry in autism and psychosis//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Social science: 200::Psychology: 260::Clinical psychology: 262en_US
dc.subjectVDP::Samfunnsvitenskap: 200::Psykologi: 260::Klinisk psykologi: 262en_US
dc.titleSleep problems and worrying precede psychotic symptoms during an online intervention for psychosisen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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