Cited by 103Mental Health Research TopicsEcosystem dynamics and resilienceBipolar Disorder and Treatment

Early Warning Signals Based on Momentary Affect Dynamics can Expose Nearby Transitions in Depression: A Confirmatory Single-Subject Time-Series Study

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Wichers, Marieke, Smit, Arnout C., Snippe, Evelien·2020·Journal for Person-Oriented Research

Abstract

Background: In complex systems early warning signals such as rising autocorrelation, variance and network connectivity are hypothesized to anticipate relevant shifts in a system. For direct evidence hereof in depression, designs are needed in which early warning signals and symptom transitions are prospectively assessed within an individual. Therefore, this study aimed to detect personalized early warning signals preceding the occurrence of a major symptom transition. Methods: Six single- subject time-series studies were conducted, collecting frequent observations of momentary affective states during a time-period when participants were at increased risk of a symptom transition. Momentary affect states were reported three times a day over three to six months (95-183 days). Depressive symptoms were measured weekly using the Symptom CheckList-90. Presence of sudden symptom transitions was assessed using change point analysis. Early warning signals were analysed using moving window techniques. Results: As change point analysis revealed a significant and sudden symptom transition in one participant in the studied period, early warning signals were examined in this person. Autocorrelation (r=0·51; p<2.2e-16), and variance (r=0·53; p<2.2e-16) in ‘feeling down’, and network connectivity (r=0·42; p<2.2e-16) significantly increased a month before this transition occurred. These early warnings also preceded the rise in absolute levels of ‘feeling down’ and the participant’s personal indication of risk for transition. Conclusions: This study replicated the findings of a previous study and confirmed the presence of rising early warning signals a month before the symptom transition occurred. Results show the potential of early warning signals to improve personalized risk assessment in the field of psychiatry.

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  1. Derogatis L. R., & Cleary P. A. (1977). Confirmation of the dimensional structure of the scl-90: A study in construct validation. Journal of Clinical Psychology, 33(4), 981- 989.
  2. Wichers M., Groot P. C., Psychosystems, ESM Group, & EWS Group (2016). Critical Slowing Down as a Personalized Early Warning Signal for Depression. Psychotherapy and Psychosomatics, 85(2), 114- 116. 10.1159/000441458 26821231 · DOI · Paper page
  3. Wichers M., Wigman J. T. W., Bringmann L. F., & de Jonge P. (2017). Mental disorders as networks: some cautionary reflections on a promising approach. Social Psychiatry and Psychiatric Epidemiology, 52(2), 143- 145. 10.1007/s00127-016-1335-z 28210750 · DOI

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Authors
Wichers, M., Smit, A. C., & Snippe, E.
Affiliations
University Medical Center Groningen (NL)
Corresponding author
Wichers, Marieke
Venue
Journal for Person-Oriented Research
Published
2020-09-10
Volume
6
Issue
1
Pages
1-15
ISSN
  • 2002-0244 (ISSN-L)
  • 2003-0177
OpenAlex
W3085042055
Cited by
103
References
30
Citations by year
2026: 5 · 2025: 11 · 2024: 21 · 2023: 23 · 2022: 23 · 2021: 18 · 2020: 2
FWCI
15.90
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal for Person-Oriented Research (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, other-oa)
Funders
European Commission (HORIZON2020)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Ecosystem dynamics and resilience
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
Keywords
early warning indicators, depression, momentary affect, emotional dynamics, autocorrelation, variance, network connectivity, change-point analysis, individual risk assessment

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