Abstract
Background: The results of an exploratory randomised controlled trial of repetition-lag training in older adults with Amnestic Mild Cognitive Impairment (aMCI) are reported. The modified repetition-lag training paradigm utilised by Lustig & Flegal (2008) with extended encoding time and strategy choice was used. The training required discriminating studied words from non-studied lures that were repeated at varying intervals during the test phase.

Aims: The aim of the training was to improve recollection with a secondary aim of assessing transfer to measures of attention and working memory. Primary outcome measures were recall of unrelated word pairs both immediately following presentation and following a delay. Secondary outcomes were a measure of visual working memory, and simple and divided attention. Participants were also asked to report on the frequency of cognitive failures and mood before and after training.

Methods: Participants (N=31) were randomised into either the treatment or control group and attended the clinic twice per week over a four week period. Twenty-four participants completed the training program.

Results: Results indicated that the training group were better at recalling unrelated word pairs after a delay. There were no significant effects of training on other outcomes, self-reported cognitive failures or mood.

Conclusion: The results indicate improved delayed recall following repetition-lag training. Suggestions are made on ways to tailor repetition-lag training to individual participants.