Publication

The dynamical signature of anhedonia in Major Depressive Disorder: Positive emotion dynamics, reactivity, and recovery

Heininga, V. E., Dejonckheere, E., Houben, M., Obbels, J., Sienaert, P., Leroy, B., van Roy, J. & Kuppens, P., 8-Feb-2019, In : BMC Psychiatry. 19, 59, 11 p.

Research output: Contribution to journalArticleAcademicpeer-review

  • Vera E. Heininga
  • Egon Dejonckheere
  • Marlies Houben
  • Jasmien Obbels
  • Pascal Sienaert
  • Bart Leroy
  • Joris van Roy
  • Peter Kuppens
Background: Major Depressive Disorder (MDD) is the leading cause of disability worldwide. The cardinal features of MDD are depressed mood and anhedonia. Anhedonia is defined as a “markedly diminished interest or pleasure in all, or almost all, activities of the day”, and has generally been investigated on group-level using retrospective data (e.g. via questionnaire/interview). However, inferences based on group-level findings not necessarily generalize to daily life experiences within individuals. Methods: We repeatedly sampled pleasurable experiences within individuals’ daily lives by means of Experience Sampling Methods, and compared how positive affect unfolded in the daily life of healthy controls versus patients diagnosed with MDD and anhedonia. We sampled Positive Affect (PA) and reward experiences on 10 semi-random time points a day, for seven days in the daily lives of 47 MDD patients with anhedonia, and 40 controls. Results: Multilevel models showed that anhedonia was associated with low PA, but not to differences in PA dynamics, nor reward frequency in daily life. In reaction to rewards, MDD patients with anhedonia showed no difference in their increase in PA (i.e., PA reactivity), and showed no signs of a faster return to baseline thereafter (i.e., PA recovery). Conclusions: Our results suggest that the dynamical signature of anhedonia in MDD can be described best as a lower average level of PA, and “normal” in terms of PA dynamics, daily reward reactivity and reward recovery. Preregistration: https://osf.io/gmfsc/; Preprint: https://osf.io/cfkts
Original languageEnglish
Number of pages11
JournalBMC Psychiatry
Volume19
Issue number59
Publication statusPublished - 8-Feb-2019
Externally publishedYes

    Keywords

  • DAILY-LIFE, MOMENTARY ASSESSMENT, EXPERIENCE, INSTABILITY, VALIDATION, PLEASURE, INERTIA, EVENTS, ADULTS, MOOD
Related Prizes
  1. Preregistration challenge

    Vera Heininga (Recipient) & Peter Kuppens (Recipient), 31-Dec-2018

    PrizeAcademic

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