They are already used for that purpose: "The largest human cognitive performance dataset reveals insights into the effects of lifestyle factors and aging" Dani

They are already used for that purpose: "The largest human cognitive performance dataset reveals insights into the effects of lifestyle factors and aging" Daniel A. Sternberg, Kacey Ballard, Joseph L. Hardy, Benjamin Katz, P. Murali Doraiswamy and Michael Scanlon, Front. Hum. Neurosci., 20 June 2013 http://dx.doi.org/10.3389/fnhum.2013.00292 http://dx.doi.org/10.3389/fnhum.2013.00292