One strand of my research investigates the cognitive mechanisms and methods for ameliorating these difficulties. In recent years much of this research has involved the CALM research clinic for children with problems in attention, learning and memory supported by the MRC. A second strand investigates the mechanisms of cognitive training with the aim of guiding the design of effective therapeutic intervention for individuals with compromised cognitive function. Current work uses online training to provide highly-powered studies testing a new theory with Norris of how working memory training works.