A diffusion model analysis of adult age differences in episodic and semantic long-term memory retrieval.

Published

Journal Article

Two experiments investigated adult age differences in episodic and semantic long-term memory tasks, as a test of the hypothesis of specific age-related decline in context memory. Older adults were slower and exhibited lower episodic accuracy than younger adults. Fits of the diffusion model (R. Ratcliff, 1978) revealed age-related increases in non-decisional reaction time for both episodic and semantic retrieval. In Experiment 2, an age difference in boundary separation also indicated an age-related increase in conservative criterion setting. For episodic old-new recognition (Experiment 1) and source memory (Experiment 2), there was an age-related decrease in the quality of decision-driving information (drift rate). As predicted by the context-memory deficit hypothesis, there was no corresponding age-related decline in semantic drift rate.

Full Text

Duke Authors

Cited Authors

  • Spaniol, J; Madden, DJ; Voss, A

Published Date

  • January 2006

Published In

Volume / Issue

  • 32 / 1

Start / End Page

  • 101 - 117

PubMed ID

  • 16478344

Pubmed Central ID

  • 16478344

International Standard Serial Number (ISSN)

  • 0278-7393

Digital Object Identifier (DOI)

  • 10.1037/0278-7393.32.1.101

Language

  • eng

Conference Location

  • United States