Morningness-eveningness and depressive symptoms: Test on the components level with CES-D in Polish students

Greater morning affect is associated with less depressive symptoms across three identified components in 974 university students.

• Three components of depressive symptoms were identified: depressed/somatic affect, positive affect, and interpersonal relations.
• Higher morning affect corresponds with lower levels of depressive symptoms in the depressed/somatic and positive affect components.
• Morning circadian preference shows a relationship with less depressive symptoms in depressed/somatic and positive affects but is unrelated to interpersonal relations.
• Morningness-eveningness components are more strongly linked to depressed/somatic and positive affects than to interpersonal relations.
• Regression analyses indicate that morning affect is a significant predictor of positive affect and better interpersonal relations.

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