Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/27276
Appears in Collections:Economics Journal Articles
Peer Review Status: Refereed
Title: The intra-day dynamics of affect, self-esteem, tiredness, and suicidality in Major Depression
Author(s): Crowe, Eimear
Daly, Michael
Delaney, Liam
Carroll, Susan
Malone, Kevin M
Contact Email: michaeldaly1@gmail.com
Keywords: Experience Sampling Method (ESM) / Ecological Momentary Assessment (EMA)
Depression
Daily symptom dynamics
Circadian rhythms
Emotional instability / variability
Issue Date: Sep-2019
Citation: Crowe E, Daly M, Delaney L, Carroll S & Malone KM (2019) The intra-day dynamics of affect, self-esteem, tiredness, and suicidality in Major Depression. Psychiatry Research, 279, pp. 98-108. https://doi.org/10.1016/j.psychres.2018.02.032
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.
DOI Link: 10.1016/j.psychres.2018.02.032
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Crowe E, Daly M, Delaney L, Carroll S & Malone KM (2019) The intra-day dynamics of affect, self-esteem, tiredness, and suicidality in Major Depression. Psychiatry Research, 279, pp. 98-108. DOI: https://doi.org/10.1016/j.psychres.2018.02.032 © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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