Cued recall and release from proactive interference in Alzheimer's disease

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Abstract
Two tasks were administered to 13 mildly to moderately impaired subjects who met clinical research criteria for AD, and 17 controls matched for age and education. In the first task, subjects were administered a cued recall test (Buschke, 1984). AD subjects were found to be variably impaired in their ability to perform the initial stimulus-processing procedure, which involved matching cues with referents. The subsequent cued recall test did not typically facilitate performance. In the second task, subjects were administered a release from proactive interference (PI) paradigm consisting of semantically related and unrelated word lists. AD subjects did not develop the expected proactive interference effect for the semantically related words or show a resulting “release from PI” on related word list recall compared to normal controls. Results are discussed in terms of the role of semantic processing in episodic memory tasks.

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