Dwell times can vary significantly. For first time users,
try starting out around 1080ms. As a rule of
thumb, a faster dwell time is more appropriate for
familiar screen layouts and a slower dwell time is
most appropriate for an unfamiliar screen layout.
Using the Grid Evaluator is an excellent way to
determine the best overall dwell time for a user. It
can take anywhere from 5 minutes to a few days
of practice before someone can settle on a final
dwell time. Dwell time may also need to be adjusted
for a user throughout the day, depending
on their environment, fatigue level, and the complexity
of the screen being accessed. Those adjustments
can be saved as seperate profiles, that
users can access themselves.