title: Selective adult age differences in an age-invariant multifactor model of declarative memory.
abstract: Confirmatory factor analysis was used to test competing models of declarative memory. Data from middle-aged participants provided support for a model comprised of 2 2nd-order (episodic and semantic memory) and 4 1st-order (recall, recognition, fluency, and knowledge) factors. Extending this model across young-old and old-old participants established support for age invariance. Tests of group differences showed an age deficit in episodic memory that was more pronounced for recall than for recognition. For semantic memory, there was an increase in knowledge from middle to young-old age and thereafter a decrease. Overall, the results support the view that episodic memory is more age sensitive than semantic memory, but they also indicate that aging has differential effects within these 2 forms of memory.
authors.affiliation: Department of Psychology, Umeå University, Sweden. lars.nyberg@psy.umu.se
authors.forename: Lars
authors.initials: L
authors.lastname: Nyberg
authors.forename: Scott B
authors.initials: SB
authors.lastname: Maitland
authors.forename: Michael
authors.initials: M
authors.lastname: Rönnlund
authors.forename: Lars
authors.initials: L
authors.lastname: Bäckman
authors.forename: Roger A
authors.initials: RA
authors.lastname: Dixon
authors.forename: Ake
authors.initials: A
authors.lastname: Wahlin
authors.forename: Lars-Göran
authors.initials: LG
authors.lastname: Nilsson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D005260:Female; D006801:Humans; D019359:Knowledge; D008297:Male; D008568:Memory; D008875:Middle Aged; D008960:Models, Psychological; D012660:Semantics