Chronotype and Psychiatric Disorders

Circadian preference

Refers to an individual's natural inclination towards a particular sleep-wake pattern.

Subclinical depressive symptoms

Mild depressive symptoms that do not meet the criteria for a clinical diagnosis of depression.

Behavioral activation system

A psychological system responsible for initiating and maintaining goal-directed behavior.

Reward responsiveness

An individual's sensitivity and reactivity to rewards.

Emotion regulation

The ability to effectively manage and regulate one's emotions.

Rumination

The tendency to repetitively focus on negative thoughts and feelings.

Trait anxiety

A stable tendency to experience anxiety across different situations.

Subjective sleep quality

An individual's perception of the quality of their sleep.

Daytime sleepiness

Excessive sleepiness or a tendency to fall asleep during the day.

Chronic fatigue

Persistent and debilitating fatigue that lasts for an extended period.