  We present the results of a user study with novice NMR analysts (N=19)
involving a gamified simulation of the NMR analysis process. Participants
solved randomly generated spectrum puzzles for up to three hours. We used eye
tracking, event logging, and observations to record symptoms of cognitive
depletion while participants worked. Analysis of results indicate that we can
detect both signs of learning and signs of cognitive depletion in participants
over the course of the three hours. Participants' break strategies did not
predict or reflect game scores, but certain symptoms appear predictive of
breaks.
