[Cheerfulness and humor in older age: results of current studies].
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D000368:Aged / Q000523:psychology*; D000369:Aged, 80 and over / Q000523:psychology*; D001290:Attitude; D002986:Clinical Trials as Topic / Q000639:trends; D019317:Evidence-Based Medicine / Q000639:trends; D005260:Female; D006240:Happiness; D006801:Humans; D008297:Male; D011788:Quality of Life / Q000523:psychology*; D013694:Temperament; D014925:Wit and Humor as Topic / Q000523:psychology*