ukupa may 09 kara pernice using eyetracking in web usability
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Using Eyetracking in Web UsabilityKara PerniceManaging DirectorNielsen Norman Group
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Benefits to Eye tracking• Test sessions are more interesting: You feel
like you are “in the user’s head”• Technology is awe-inspiring• Expense involved can indicate commitment• Heatmaps are easy to make and are sexy• You can learn some new things, just a few:– Exhaustive Review– Obstacle course– Magnetism– Reading patterns
• “EyetrackingWeb Usability” Jakob Nielsen Kara Pernice, due this year (2009)
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BESIDES THE MOST BASIC QUALITATIVE, BEHAVIORAL RESEARCH METHOD, THERE ARE NO REQUIRED USABILITY METHODS (INCLUDING ET)
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MOST MAJOR USABILITY ISSUES CAN BE UNCOVERED WITH TRADITIONAL BEHAVIORAL, OBSERVATIONAL RESEARCH- WITHOUT EYETRACKING
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IT’S ALL MOST TEAMS CAN DO TO KEEP UP WITH DOING THE TRADITIONAL/BASIC USABILITY METHODS
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EYETRACKINGSTUDIES ARE EXPENSIVE AND TIME-CONSUMING
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Eyetracking Method Time Drain
• Test full processes, not just single pages– Using the Web is a fluid process– Static page tasks miss the flow
• Disclose to the user, in recruit and during session set-up, that you are tracking the eye
• Take time to get the calibration right• Closely monitor eye capture status during the
session• ANALYSIS is a bear—time drain unfathomable
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HEATMAPS ARE SO EASY TO GENERATE BUT JUST AS EASY TO MISINTERPRET (OR BE INACCURATE)
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GP looks a little off
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The real story
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Think Aloud Protocol• TOL affects the heatmaps and eye gaze• Retrospective– Catch 22- Hybrid of behavioral research and self-
reported• Can nullify all the good behavioral work you just
did– Too novel: “Is that my eye?!”– Defend themselves– Want to remember/ derive stories/ please facilitator
• Recommend a combination – Thinking aloud for qualitative learning, NOTE: TOL
does not necessarily mean talking the whole time– No thinking aloud if generating heatmaps– No retrospective in most situations– Can do post-task interview under a separate
stimulus
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THE TECHNOLOGY CAN HELP, BUT THE ASSOCIATED COSTS LIKELY OUTWEIGH THE BENEFITS… TODAY
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Thank you