John R. Anderson Shawn Betts Jennifer L. Ferris Jon M. Fincham Jian Yang Using Brain Imaging to Interpret Student Problem Solving. 22-29 2011 26 IEEE Intelligent Systems 5 http://doi.ieeecomputersociety.org/10.1109/MIS.2011.57 db/journals/expert/expert26.html#AndersonBFFY11