Intolerance of uncertainty fuels depressive symptoms through rumination: Cross-sectional and longitudinal studies

Vivian Huang, Mabel Yu, R Nicholas Carleton and Shadi Beshai

PLOS ONE, 2019, vol. 14, issue 11, 1-16

Abstract: The current study replicated and extended previous studies by examining the mediating and moderating role of rumination in the relationship between intolerance of uncertainty (IU) and depression in a community sample using both cross-sectional (n = 494; 56.9% female) and a two-months longitudinal (n = 321; 48.4% female) designs. Participants in each study were recruited through online crowdsourcing websites and completed study questionnaires. Results from Study 1 suggested that, while rumination did not appear to moderate the relationship between IU and depression, rumination appeared to partially mediates such relationship. Results from Study 2 supported rumination as fully mediating the relationship between IU and depression over two months. The brooding and reflection rumination subtypes exerted a significant indirect, but not moderating, effect on the relationship between IU and depression. Brooding exhibited a stronger mediation effect than did reflection. Overall, current results suggest that high levels of IU fuel the development of depression symptoms over time through engagement in heightened rumination. The IU-depression association appeared fully explained through rumination as it is a passive and contextually-dependent coping response that may enhance individuals’ emotion and facilitate the development of depressive symptoms.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0224865

DOI: 10.1371/journal.pone.0224865

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