Clarifying the Contributions of Worry and Rumination in Predicting Subjective Sleep Outcomes

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dc.contributorLichstein, Kenneth L
dc.contributorCrowther, Martha R
dc.contributorGeyer, James D
dc.contributorJarrett, Matthew A
dc.contributor.advisorGunn, Heather E.
dc.contributor.authorTutek, Joshua
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2022-04-13T20:34:09Z
dc.date.available2022-04-13T20:34:09Z
dc.date.issued2020
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractHarvey’s (2002) cognitive model of insomnia posits that subjectively experienced poor sleep and sleep-related impairment during the day arise from negatively toned cognitive activity consisting of worry and rumination. Although these processes are often treated as interchangeable, evidence suggests that they constitute distinct constructs, and the need for clarifying their individual properties in driving self-reported sleep problems has been highlighted. This study investigated whether worry and rumination differentially predict sleep disturbance and sleep-related impairment in an online population-based sample. Hierarchical regression models entered the cognitive process variables in a stepwise fashion to assess their relative strength in explaining sleep outcomes after controlling for demographics, circadian factors, health status, and self-estimated sleep parameters. Separate analyses were conducted using sleep-specific and general trait measures of worry and rumination. In the sleep-specific analysis, only worry significantly predicted sleep disturbance after all covariates were entered, whereas rumination was entered after worry in the model predicting sleep-related impairment. In the analysis of general worry and rumination, each variable significantly predicted both sleep outcomes. Worry was a stronger predictor of sleep disturbance, whereas rumination was a stronger predictor of sleep-related impairment. Findings suggest a role for rumination separate from that of worry in perpetuating daytime impairment attributed to poor sleep. The results also highlight a need to more closely examine how cognition and other factors contribute to daytime symptomology in insomnia.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otherhttp://purl.lib.ua.edu/182096
dc.identifier.otheru0015_0000001_0004249
dc.identifier.otherTutek_alatus_0004D_13902
dc.identifier.urihttps://ir.ua.edu/handle/123456789/8428
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectCognition
dc.subjectInsomnia
dc.subjectrumination
dc.subjectSleep
dc.subjectworry
dc.titleClarifying the Contributions of Worry and Rumination in Predicting Subjective Sleep Outcomesen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Psychology
etdms.degree.disciplineClinical psychology
etdms.degree.grantorThe University of Alabama
etdms.degree.leveldoctoral
etdms.degree.namePh.D.
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