With an ever-growing elderly population, the number of people with dementia is expected to triple by 2050 (Dementia, 2017). Dementia prevention is an increasingly critical issue that needs to be addressed. Mild cognitive impairment is considered an intermediate, subclinical stage between normal cognition and dementia. The most common subtype, amnestic MCI (a-MCI), is thought to be a strong predictor of future dementia (Tangalos and Petersen, 2018). It has been reported that individuals with

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... I progress to dementia at a rate of 12-15% per year compared to 1-2% for healthy adults (Kinsella et al., 2009). A number of studies have implemented cognitive therapies for adults with MCI, but few have analyzed the long-term results of such therapies regarding cognitive decline. This prompted the authors to systematically review studies of cognitive intervention in adults with MCI and evaluate whether intervention prevents further cognitive decline into dementia.