title: The affect balance scale: a validity study with aged samples.
mesh_terms: D000339:Affect; D000368:Aged; D006240:Happiness; D006801:Humans; D001523:Mental Disorders; D008603:Mental Health; D008875:Middle Aged; D009013:Morale; D011581:Psychological Tests; D011594:Psychometrics; D012380:Role