I am in no way affiliated with the guy but you should read the seminal papers published by John R. Anderson. This guy has been in this game since the 70s Carn

I am in no way affiliated with the guy but you should read the seminal papers published by John R. Anderson. This guy has been in this game since the 70s Carnegie Mellon University Professor of Psychology and Computer Science http://act-r.psy.cmu.edu/peoplepages/ja/ http://act-r.psy.cmu.edu/peoplepages/ja/