Journal
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-LEARNING MEMORY AND COGNITION
Volume 32, Issue 1, Pages 101-117Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0278-7393.32.1.101
Keywords
aging; reaction time; context memory; recognition test
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Funding
- NATIONAL INSTITUTE ON AGING [R37AG002163, R01AG011622] Funding Source: NIH RePORTER
- NIA NIH HHS [R37 AG02163, R37 AG002163, R01 AG11622, R01 AG011622] Funding Source: Medline
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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 nondecisional 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.
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