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Impaired production priming and intact identification priming in Alzheimer's disease.

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      This study examined the distinction between identification and production processes in repetition priming for 16 patients with Alzheimer's disease (AD) and 16 healthy old control participants (NC). Words were read in three study phases. In three test phases, participants (1) reread studied words, along with unstudied words, in a word-naming task (identification priming); (2) completed 3-letter stems of studied and unstudied words into words in a word-stem completion task (production priming); and (3) answered yes or no to having read studied and unstudied words in a recognition task (explicit memory). Explicit memory and word-stem completion priming were impaired in the AD group compared to the NC group. After correcting for baseline slowing, word-naming priming magnitude did not differ between the groups. The results suggest that the distinction between production and identification processes has promise for explaining the pattern of preservation and failure of repetition priming in AD.

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      [1 ] Rush-Presbyterian-St Luke's Medical Center, Department of Neurological Sciences, Chicago, Illinois, USA.
      J Int Neuropsychol Soc
      Journal of the International Neuropsychological Society : JINS
      Nov 2001
      : 7
      : 7


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