title: Depressive symptoms predict decline in perceptual speed in older adulthood.
abstract: Depressive symptoms and cognitive decline are associated in older age, but research is inconsistent about whether one condition influences the development of the other. We examined the directionality of relations between depressive symptoms and perceptual speed using bivariate dual change score models. Assessments of depressive symptoms and perceptual speed were completed by 1,206 nondemented older adults at baseline, and after 2, 8, 11, and 15 years. After controlling for age, education, baseline general cognitive ability, and self-reported health, allowing depressive symptoms to predict subsequent change in perceptual speed provided the best fit. More depressive symptoms predicted subsequently stronger declines in perceptual speed over time lags of 1 year.
authors.affiliation: Ageing Research Unit, Centre for Mental Health Research, Australian National University, Canberra ACT 0200, Australia, allison.bielak@anu.edu.au
authors.forename: Allison A M
authors.initials: AA
authors.lastname: Bielak
authors.forename: Denis
authors.initials: D
authors.lastname: Gerstorf
authors.forename: Kim M
authors.initials: KM
authors.lastname: Kiely
authors.forename: Kaarin J
authors.initials: KJ
authors.lastname: Anstey
authors.forename: Mary
authors.initials: M
authors.lastname: Luszcz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology; D001315:Australia; D003072:Cognition Disorders / Q000523:psychology*; D003863:Depression / Q000523:psychology*; D004522:Educational Status; D005260:Female; D006801:Humans; D007206:Individuality; D008137:Longitudinal Studies; D008297:Male; D009483:Neuropsychological Tests; D010465:Perception; D011569:Psychiatric Status Rating Scales