title: Positive and negative social exchanges: weighing their effects in later life.
authors.forename: K S
authors.initials: KS
authors.lastname: Rook
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D000368:Aged; D000375:Aging / Q000523:psychology*; D006801:Humans; D007398:Interpersonal Relations; D008016:Life Change Events; D008603:Mental Health