Text and Data Mining valid from 2016-09-12
Received: 21 April 2016
Accepted: 11 August 2016
First Online: 12 September 2016
: B.E.W. and W.Z. have financial interests in the Yale startup company C8 Sciences that developed and markets the brain-training games used in the research reported in this paper. None of the other authors have competing financial interests.