Pleasant activities and depression.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000704:Analysis of Variance; D003863:Depression / Q000145:classification / Q000209:etiology* / Q000628:therapy; D004644:Emotions; D005260:Female; D006801:Humans; D008950:MMPI; D008297:Male; D001523:Mental Disorders / Q000145:classification; D008875:Middle Aged; D012737:Sex Factors; D012919:Social Behavior