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Establishing cutting-edge technology in afederal government usability lab: Eye tracking
at the Census Bureau in 2010
Kathleen T. Ashenfelter
U.S. Census BureauStatistical Research Division
FedCASIC 2010Washington, D.C.March 18, 2010
Usability Laboratory at the U.S. Census Bureau Thank you
Outline
1 U.S. Census Bureau Usability LabUsability Lab OverviewEye–Tracking TechnologyEye–Tracking CapabilityNew Set–UpTips for Acquiring New Lab Equipment
2 Thank you
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Usability Laboratory at the U.S. Census Bureau Thank you
Census Usability Lab Overview
Small laboratory in the Statistical Research DivisionCapabilities:
Expert reviewsLow–to–High–Fidelity usability studiesCard–sorting analysesEye–tracking studiesAccessibility evaluations
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Usability Laboratory at the U.S. Census Bureau Thank you
Census Usability Lab Overview
Used in scientific research for over 100 yearsWill tell you where users are focusing on a stimulusOvert attention is important
If users do not see features on a survey or Web site, theywill not act on them or click on them
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Usability Laboratory at the U.S. Census Bureau Thank you
Former Set–up
Tobii 2250 Eye Tracker50 Hz sampling rate
PC w/1 GB RAMNot much hard drive storage
Tobii Clearview software (no longer supported)
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Usability Laboratory at the U.S. Census Bureau Thank you
Lab Research Needs
Analyze the usability of online surveys, Web sites, andinterfacesTest usability of paper forms, brochures, and mailingmaterialsAccessibility TestingIncreasing Demand for Eye-tracking data
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Usability Laboratory at the U.S. Census Bureau Thank you
New Set–up
Tobii T120 Eye Tracker120 Hz sampling rateOn–screen stimuli
New Dell T7500 Workstation4 GB RAMRAID 5 configuration
Tobii Studio SoftwareMore detailed analysis capabilityIncludes logging capability
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Usability Laboratory at the U.S. Census Bureau Thank you
New Set–up
Tobii X120 Eye Tracker120 Hz sampling rateAny real–world stimuliWorks best for two–dimensional objects
New Dell T7500 Workstation4 GB RAMRAID 5 configuration
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Usability Laboratory at the U.S. Census Bureau Thank you
Tobii Studio
Improved calibration capabilityMore detailed analysis capabilityExpanded statistics on Average Fixation Duration,Number of fixations, etc.Creates comparative tables and chartsIncludes logging capability
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Usability Laboratory at the U.S. Census Bureau Thank you
Eye–Tracking Analysis: Quantitative Measures
Areas of Interest (AOIs): Items we are interested in testingNumber of Fixations: How often a participant looks atsomething (AOIs)Mean Fixation Duration: How long a participant looks atsomething (AOIs)Time to First FixationNumber of mouse clicksOrder of Fixations : Can tell where a participant looksfirst, most often, etc.
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Usability Laboratory at the U.S. Census Bureau Thank you
Tips for Acquiring New Lab Equipment
Federal Desktop Core Compliance (FDCC)Required for Federal Desktop MachinesSoftware must pass FDCC testing unless Special PurposeMachineTobii Studio does not pass FDCC testing
Uses a plug-in to Internet Explorer that is blocked bysecurity settings
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Usability Laboratory at the U.S. Census Bureau Thank you
Tips for Acquiring New Lab Equipment
Ask questions about computer inputs/outputsDigital or Analog output?Network configuration required?
Ask about issues that similar labs have faced and what thesolutions wereAllow extra time
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