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Bidirectional relationship between sleep and optimism with depressive mood as a mediator: A longitudinal study of Chinese working adults
Lau,Esther Yuet Ying1,2; Harry Hui,C.3; Cheung,Shu Fai4; Lam,Jasmine3
2019-06-19
Source PublicationJournal of Psychosomatic Research
ISSN18791360 00223999
Volume79Issue:5Pages:428-434
AbstractObjective: Sleep and optimism are important psycho-biological and personality constructs, respectively. However, very little work has examined the causal relationship between them, and none has examined the potential mechanisms operating in the relationship. This study aimed to understand whether sleep quality was a cause or an effect of optimism, and whether depressive mood could explain the relationship. Method: Internet survey data were collected from 987 Chinese working adults (63.4% female, 92.4% full-time workers, 27.0% married, 90.2% Hong Kong residents, mean age = 32.59 at three time-points, spanning about 19 months). Measures included a Chinese attributional style questionnaire, the Pittsburgh Sleep Quality Index, and the Depression Anxiety Stress Scale. Results: Cross-sectional analyses revealed moderate correlations among sleep quality, depressive mood, and optimism. Cross-lagged analyses showed a bidirectional causality between optimism and sleep. Path analysis demonstrated that depressive mood fully mediated the influence of optimism on sleep quality, and it partially mediated the influence of sleep quality on optimism. Conclusion: Optimism improves sleep. Poor sleep makes a pessimist. The effects of sleep quality on optimism could not be fully explained by depressive mood, highlighting the unique role of sleep on optimism. Understanding the mechanisms of the feedback loop of sleep quality, mood, and optimism may provide insights for clinical interventions for individuals presented with mood-related problems.
KeywordAttributional style Chinese Depression Longitudinal study Optimism Sleep quality
DOI10.1016/j.jpsychores.2015.09.010
URLView the original
Language英语
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Cited Times [WOS]:15   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorLau,Esther Yuet Ying
Affiliation1.Department of Psychological StudiesThe Hong Kong Institute of Education,Hong Kong
2.Department of PsychiatryThe University of Hong Kong,Hong Kong
3.Department of PsychologyThe University of Hong Kong,Hong Kong
4.Department of PsychologyUniversity of Macau,Macau,Macao
Recommended Citation
GB/T 7714
Lau,Esther Yuet Ying,Harry Hui,C.,Cheung,Shu Fai,et al. Bidirectional relationship between sleep and optimism with depressive mood as a mediator: A longitudinal study of Chinese working adults[J]. Journal of Psychosomatic Research,2019,79(5):428-434.
APA Lau,Esther Yuet Ying,Harry Hui,C.,Cheung,Shu Fai,&Lam,Jasmine.(2019).Bidirectional relationship between sleep and optimism with depressive mood as a mediator: A longitudinal study of Chinese working adults.Journal of Psychosomatic Research,79(5),428-434.
MLA Lau,Esther Yuet Ying,et al."Bidirectional relationship between sleep and optimism with depressive mood as a mediator: A longitudinal study of Chinese working adults".Journal of Psychosomatic Research 79.5(2019):428-434.
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