Help selecting an eye tracker
Currently my lab is using the EyeTribe to record pupillometry data while participants perform an attention task with their heads on a chinrest. We are wondering if it would be worth our money (willing to spend any amount) to invest in a "better" tracker. Could the quality of pupil diameter data really be improved that much by a more expensive tracker? The only benefit I can think of is that the EyeTracker provides pupil diameter in arbitrary values, while nicer trackers can report this information in millimeters or something (even though this really doesnt matter since most pupillometry studies are interested in relative size). We would love any suggestions. Thanks!