A 2013 peer-reviewed study from Dr. Shelli Kesler, an Assistant Professor at the Stanford University School of Medicine, shows that Lumosity training can improve the brain’s executive functions, which are a key driver of everyday quality of life. Dr. Shelli Kesler found that women who completed about 12 weeks of Lumosity training improved significantly on a common neuropsychological test (the WCST) compared to a control group of women that did not train. The training targeted skills such as working memory, verbal fluency, processing speed, and cognitive flexibility.