Before revision:  In line with this, the health economic impact of dementia is escalating to unsustainable levels, with estimates that by 2050 dementia care will cost an annual trillion in the US alone. The development of interventions capable of improving cognition therefore represents an issue of the highest priority for healthcare. There has been considerable focus on cognitive training (CT) in particular, but work to date has been limited by two main factors, namely (i) the lack of transferability of CT gains to real life activities, and (ii) the lack of adherence to CT programmes .
After revision:  In line with this, the health economic impact of dementia is escalating to unsustainable levels, with estimates that by 2050 dementia care will cost an annual Cognitive training has shown promising results for delivering improvements in human cognition related to attention, problem solving, reading comprehension and information retrieval. However, two frequently cited problems in cognitive training literature are a lack of user engagement with the training programme, and a failure of developed skills to generalise to daily life .