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- W4246704037 abstract "Normal aging impairs long-term declarative memory, and evidence suggests that this impairment may be driven partly by structural or functional changes in the medial temporal lobe (MTL). Theories of MTL memory function therefore make predictions for age-related memory loss. One theory – the Representational-Hierarchical account – makes two specific predictions. First, recognition memory in older participants should be impaired by feature-level interference, in which studied items contain many shared perceptual features such that those features appear repeatedly. Second, if the interference in a recognition memory task – i.e., the information that repeats across items – resides at a higher level of complexity than simple perceptual features, such as semantic gist, older adults should be less impacted by such interference than young adults. We tested these predictions using the Deese-Roediger-McDermott paradigm, by creating feature-level (i.e., perceptual) interference with phonemically/orthographically related word categories, and higher-level associative interference with semantically related word categories. Importantly, we manipulated category size in order to compare the effect of less versus more interference (i.e., small versus large category size), which served to (1) avoid potential item confounds arising from systematic differences between words belonging to perceptually- versus semantically-related categories, and (2) ensure that any effect of interference was due to information encoded at study, rather than pre-experimentally. Further, we used signal detection theory to interpret our data, rather than examining false alarm rates in isolation, thereby avoiding potentially confounding contamination of the memory measure by changes in response bias across conditions or groups. Older participants, relative to young adults, were relatively more impaired by perceptual interference and less impaired by semantic interference. This pattern seems at odds with many current theories of age-related memory loss, but is in line with the Representational-Hierarchical account." @default.
- W4246704037 created "2022-05-12" @default.
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- W4246704037 date "2018-01-12" @default.
- W4246704037 modified "2023-09-23" @default.
- W4246704037 title "Recognition Memory Shielded from Semantic but not Perceptual Interference in Normal Aging" @default.
- W4246704037 doi "https://doi.org/10.31234/osf.io/a9mky" @default.
- W4246704037 hasPublicationYear "2018" @default.
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