In new research, scientists at The Ohio State University used eye-tracking and pupil dilation technology to see what happens as people figured out how to win a strategy game on a computer.
"We could see our study participants figuring out the solution through their eye movements as they considered their options," said Ian Krajbich, co-author of the study and assistant professor of psychology and economics at Ohio State.
"We could predict they were about to have an epiphany before they even knew it was coming."
This might be useful to determine when you are trying to teach a difficult subject to someone who you're afraid might be inclined to just nod their head. Or maybe this is how the Voight-Kampff test works. (Are you a replicant?) http://www.bfi.org.uk/are-you-...