  Pointing is the task of tracking a target with a pointer and confirming the
target selection through a click action when the pointer is positioned within
the target. Little is known about the mechanism by which users plan and execute
the click action in the middle of the target tracking process. The Intermittent
Click Planning model proposed in this study describes the process by which
users plan and execute optimal click actions, from which the model predicts the
pointing error rates. In two studies in which users pointed to a stationary
target and a moving target, the model proved to accurately predict the pointing
error rates (R2 = 0.992 and 0.985, respectively). The model has also
successfully identified differences in cognitive characteristics among
first-person shooter game players.
