title: Ten-year longitudinal trajectories of older adults' basic and everyday cognitive abilities.
abstract: OBJECTIVE
  To examine the longitudinal trajectories of everyday cognition and longitudinal associations with basic (i.e., laboratory and experimentally measured) cognitive abilities, including verbal memory, inductive reasoning, visual processing speed, and vocabulary.
  
  
  METHODS
  Participants were healthy older adults drawn from the no-treatment control group (N = 698) of the Advanced Cognitive Training for the Independent and Vital Elderly (Willis et al., 2006) randomized trial and were assessed at baseline and 1, 2, 3, 5, and 10 years later. Analyses were conducted using latent growth models.
  
  
  RESULTS
  Modeling revealed an overall inverted-U shape (quadratic) trajectory across cognitive domains. Among basic cognitive predictors, level and slope in reasoning demonstrated the closest association to level and slope of everyday cognition, and accounted for most of the individual differences in linear gain in everyday cognition.
  
  
  CONCLUSIONS
  Everyday cognition is not buffered against decline, and is most closely related to inductive reasoning in healthy older adults. To establish the clinical utility of everyday cognitive measures, future research should examine these associations in samples with more cognitive impairment.
authors.affiliation: Department of Clinical and Health Psychology, University of Florida.
authors.forename: Anna
authors.initials: A
authors.lastname: Yam
authors.affiliation: Department of Epidemiology, Center on Aging and Health, Johns Hopkins Bloomberg School of Public Health.
authors.forename: Alden L
authors.initials: AL
authors.lastname: Gross
authors.affiliation: Max Planck Institute for Human Development.
authors.forename: John J
authors.initials: JJ
authors.lastname: Prindle
authors.affiliation: Department of Clinical and Health Psychology, University of Florida.
authors.forename: Michael
authors.initials: M
authors.lastname: Marsiske
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology*; D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition; D003072:Cognition Disorders / Q000523:psychology; D000066492:Cognitive Aging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007206:Individuality; D008297:Male; D008568:Memory; D008875:Middle Aged; D016032:Randomized Controlled Trials as Topic; D014706:Verbal Learning