The investigators developed one method of working memory training which uses a computerized, game-like approach, which is ideal for providing intensive, repetitive practice, with feedback and monitoring of progress. While the maximally effective dose is not yet identified, adaptive training practice normally is provided for 5 days/week for 5-10 weeks. With this intensity, computerized working memory training has been shown to improve cognitive abilities in a range of groups (e.g., healthy younger and older adults, those with Attention deficit hyperactivity disorder (ADHD), stroke, schizophrenia) and these benefits can generalize to other cognitive abilities and be maintained, at least in the short term.