https://dl.dropboxusercontent.com/u/182368464/2013-dunning.pdf
> The greatest improvements in WM following training were observed in complex span measures strongly associated with children’s academic achievements in literacy and mathematics (Swanson & Siegel, 2001; Alloway, Gathercole, Willis & Adams, 2004). However, adaptive WM training did not significantly improve children’s performance on standardized reading and mathematics tests either immediately after training or one year later. Indeed, the only significant change in any group was an increase in basic reading scores for the no intervention group. These data stand in contrast with Holmes et al.’s (2009) findings that mathematical abilities were enhanced by adaptive training 6 months after training was completed. However, this earlier study lacked the comparison control condition at follow-up required to provide a stringent test of the specificity of training gains.
--
gwern
http://www.gwern.net