Crowe, Eimear and Daly, Michael and Delaney, Liam and Carroll, Susan and Malone, Kevin M. (2019) The intra-day dynamics of affect, self-esteem, tiredness, and suicidality in Major Depression. Psychiatry Research, 279. pp. 98-108. ISSN 0165-1781

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Abstract

Despite growing interest in the temporal dynamics of Major Depressive Disorder (MDD), we know little about the intra-day fluctuations of key symptom constructs. In a study of momentary experience, the Experience Sampling Method captured the within-day dynamics of negative affect, positive affect, self-esteem, passive suicidality, and tiredness across clinical MDD (N= 31) and healthy control groups (N= 33). Ten symptom measures were taken per day over 6 days (N= 2231 observations). Daily dynamics were modeled via intra-day time-trends, variability, and instability in symptoms. MDD participants showed significantly increased variability and instability in negative affect, positive affect, self-esteem, and suicidality. Significantly different time-trends were found in positive affect (increased diurnal variation and an inverted U-shaped pattern in MDD, compared to a positive linear trend in controls) and tiredness (decreased diurnal variation in MDD). In the MDD group only, passive suicidality displayed a negative linear trend and self-esteem displayed a quadratic inverted U trend. MDD and control participants thus showed distinct dynamic profiles in all symptoms measured. As well as the overall severity of symptoms, intra-day dynamics appear to define the experience of MDD symptoms.

Item Type:	Article
Additional Information:	Cite as: Eimear Crowe, Michael Daly, Liam Delaney, Susan Carroll, Kevin M. Malone, The intra-day dynamics of affect, self-esteem, tiredness, and suicidality in Major Depression, Psychiatry Research, Volume 279, 2019, Pages 98-108, ISSN 0165-1781, https://doi.org/10.1016/j.psychres.2018.02.032.
Keywords:	Circadian rhythms; Daily symptom dynamics; Depression; Emotional instability; variability; Experience Sampling Method; ESM; Ecological Momentary Assessment; EMA;
Academic Unit:	Faculty of Science and Engineering > Psychology
Item ID:	13619
Identification Number:	https://doi.org/10.1016/j.psychres.2018.02.032
Depositing User:	Michael Daly
Date Deposited:	23 Nov 2020 15:48
Journal or Publication Title:	Psychiatry Research
Publisher:	Elsevier
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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