No evidence of intelligence improvement after working memory training: a randomized, placebo-controlled study
Journal of Experimental Psychology General (2013) - Comment
pubmed: 22708717  doi: 10.1037/a0029082  issn: 1939-2222  issn: 0096-3445 

Thomas S. Redick, Zach Shipstead, Tyler L. Harrison, Kenny L. Hicks, David E. Fried, David Z. Hambrick, Michael J. Kane, Randall W. Engle