title: Variability in cognitive function in the elderly: implications for societal participation.
authors.affiliation: Pennsylvania State University, University Park 16802.
authors.forename: K W
authors.initials: KW
authors.lastname: Schaie
mesh_terms: D000367:Age Factors; D000368:Aged; D000375:Aging / Q000235:genetics*; D003071:Cognition / Q000502:physiology*; D003430:Cross-Sectional Studies; D014644:Genetic Variation; D006801:Humans; D008137:Longitudinal Studies; D008606:Mental Processes / Q000502:physiology