Few studies have examined working memory (WM) training-related gains and their transfer and maintenance effects in older adults. This present research investigates the efficacy of a verbal WM training program in adults aged 65-75 years, considering specific training gains on a verbal WM (criterion) task as well as transfer effects on measures of visuospatial WM, short-term memory, inhibition, processing speed, and fluid intelligence. Maintenance of training benefits was evaluated at 8-month follow-up. Trained older adults showed higher performance than did controls on the criterion task and maintained this benefit after 8 months. Substantial general transfer effects were found for the trained group, but not for the control one. Transfer maintenance gains were found at follow-up, but only for fluid intelligence and processing speed tasks. The results are discussed in terms of cognitive plasticity in older adults.
The purpose of the present study was to test the efficacy of a visuospatial working memory (WM) training in terms of its transfer effects and maintenance effects, in the young-old and old-old. Forty young-old and 40 old-old adults took part in the study. Twenty participants in each age group received training with a visuospatial WM task, whereas the others served as active controls and completed alternative activities. Training benefits were examined, considering (a) the specific training-related gains in a visuospatial WM task (criterion); and (b) the transfer effects on measures of verbal WM, visuospatial short-term memory, inhibition, processing speed, and reasoning. Maintenance of training benefits was also assessed after 8 months. Results showed that the trained groups (both young-old and old-old), but not the control groups, performed better in the WM measures and preserved these gains after 8 months. Some transfer effects were found, but only in the young-old-trained participants, and they were not maintained at the follow-up. These results are discussed in terms of the efficacy of WM training for older adults when a visuospatial modality is used.
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