Emotion dynamics in current and remitted depression: an ecological momentary assessment study

Area of Science:

• Psychiatry
• Affective Science
• Clinical Psychology

Background:

• Depression is linked to altered affect dynamics compared to healthy individuals.
• Research on affect dynamics in depression remission is limited and shows mixed results.

Purpose of the Study:

• To investigate affect dynamics in individuals with current depression, depression remission, and no history of depression.
• To compare emotion and motivation patterns across these three groups.

Main Methods:

• A community sample of 345 18-year-olds underwent diagnostic interviews.
• Ecological Momentary Assessment (EMA) was used to probe emotions and low interest/motivation five times daily for two weeks.
• Affective "home base" (average level), variability, and inertia (persistence) were analyzed.

Main Results:

• Both depressed and remitted groups showed higher negative affect (NA) and low interest/motivation, lower positive affect (PA), greater variability, and greater NA inertia than never-depressed individuals.
• The currently depressed group exhibited higher sadness, more varied negative emotions, and greater low interest/motivation inertia compared to the remitted group.
• No significant differences were found between depressed and remitted groups in anxious/upset affect home base, anxious/PA variability, or inertia of most emotions.

Conclusions:

• Abnormalities in emotion and reward functioning persist after depression resolves.
• During depressive episodes, sadness, negative emotion range, and low motivation are exacerbated.
• Anxiety, upset, and blunted positive emotions characterize both symptomatic and remitted depression.