title: Diurnal mood fluctuation and age.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002940:Circadian Rhythm; D003866:Depressive Disorder / Q000523:psychology; D004644:Emotions; D005221:Fatigue / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged