Hi Kristen,

Apologies from coming late. I've had some experience with eye
tracking during my scientific work and to be honest, it probably
wasn't worth the effort. Eye tracking measures immediate visual
focus (and not necessarily attention - it is possible that the two
can be split on occasions) and it's difficult to infer from this up
to the higher levels of cognition that usability work is most often
concerned with. Well used (i.e., experienced analysts, good
participants, an appropriate task, and suitable conditions), it can
shed light on the low level features of something, but miss any of
these out, and the data are probably misleading.

I used this system a while ago and cannot remember what its name was
sorry, but I remember about 30% of participants being unmeasurable.



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Posted from the new ixda.org
http://www.ixda.org/discuss?post=44684


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