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'Strenghts' and 'Weaknesses' of Eye Tracking

One of the many sections my thesis will focus on is - as the title indicates – the various ‘strengths’ and ‘weaknesses’ of eye tracking.

From my (hopefully) growing experience, all I can really say right now is that eye tracking has both ‘good things’ and ‘bad things’. In an interesting piece of work, Robert Jacob and Keith Karn [1] present a listing of several authors’ views on the ‘value’ of eye tracking. The common idea found: eye tracking is ‘promising’.

My search on the internet in attempt to find a few opinions on the subject was semi-productive. I did find a couple of interesting contributions:

Is Eye Tracking Worth It?’ by Jim Ross
http://uxmatters.com/mt/archives/2009/10/eyetracking-is-it-worth-it.php

Eye Tracking: Worth the Expense?’ by Jared Spool
http://www.uie.com/brainsparks/2006/06/13/eyetracking-worth-the-expense/

Eye Tracking the User Experience’ by Mark McElhaw
http://www.spotlessinteractive.com/articles/usability-research/eye-tracking-the-user-experience.php

 

Based on my brief analysis of each contribution, I developed this table why summarizes some of the main (not all) ideas that 'stood out'.


 

Description

Strengths

Help identify usability problems             

Show hard to articulate behavior

Visualizing data for observers

Provide compelling visualizations of usability problems

Video-based eye tracking equipment is becoming relatively inexpensive

Better visualization and analysis tools are becoming available

Evaluating efficiency of systems where visual-motor reaction time is crucial.

Analysis of tasks where traditional usability testing methods have indicated a problem that eye tracking might clarify

 

 

Weakness

Eye Tracking Can’t Track Peripheral Vision

Fixations don’t represent attention or understanding

Interactions between facilitator and participant change

Eye tracking Can Be Intrusive

Eye tracking Tests Take More Time

Eye tracking Is Expensive

Eye tracking Can Be Difficult to Learn

Eye tracking Is Subject to Technical Problems

Not Every Participant Can Work with an Eye Tracker

Labor-intensive data extractions

Difficulties in data interpretation

 

Hopefully this will be of some help for those who are working on the same subject.

If you’re just dropping by and happen to know where I (we) can find more valuable information on the subject, please let me (us) know J

 

Further reading:

[1] http://www.cs.tufts.edu/~jacob/papers/ecem.pdf


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published by sja às 16:06

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