期刊
JOURNAL OF CLINICAL AND EXPERIMENTAL NEUROPSYCHOLOGY
卷 31, 期 3, 页码 312-321出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/13803390802112554
关键词
Episodic memory; Level of processing; Retrieval task; Normal aging; Mild cognitive impairment
资金
- Groupe d'Interet Scientifique Institut de la Longevite et du Vieillissement
A total of 16 young (M = 27.25 years), 13 healthy elderly (M = 75.38 years), and 10 older adults with probable mild cognitive impairment (MCI; M = 78.6 years) carried out a task under two different encoding conditions (shallow vs. semantic) and two retrieval conditions (free recall vs. recognition). For the shallow condition, participants had to decide whether the first or last letter of each word in a list was E. For the semantic condition, they had to decide whether each word represented a concrete or abstract entity. The MCI group was only able to benefit from semantic encoding to the same extent as the healthy older adults in the recognition task, whereas the younger and healthy older adults benefited in both retrieval tasks. These results suggest that the MCI group required cognitive support at retrieval to make effective use of semantic processing carried out at encoding. In the discussion, we suggest that adults with MCI engage more in deep processing, using the semantic network, than hitherto thought.
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