hci/ect 441 dr. craig barnes [email protected] office hours: tues 5:00pm-5:45pm tues...
TRANSCRIPT
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HCI/ECT 441
Dr. Craig [email protected]
Office Hours: Tues 5:00pm-5:45pmTues 9:00pm-9:45pm
Office: ?
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ECT/HCI 441 - Course Info
Course Web Site: www.evl.uic.edu/barnes/HCI441
Check it often.
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Course Grading
Homeworks: 40%User Testing: 15%Final: 35%Individual Contribution: 10%*
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Disciplines contributing to HCI
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Web Usability Problems
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Web Usability Problems
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Web Usability Problems
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Web Usability Problems
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Web Usability Problems
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Web Usability Problems
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User Centered Development
Differs from traditional software development:
User CentricInterdisciplinaryHighly iterative
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User Centered Development
Initial Stages:
Needs AnalysisUser and Task AnalysisFunctional AnalysisRequirements Analysis
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Needs Analysis
Simple Description of
Type of SystemAudience
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User Analysis
Characterizes potential user of site:
General DemographicsContext of Use
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User Analysis
Benefits:
Cost reduction in: development & maintenance Support Training
Increased sales
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User Analysis
Key: Know your userAdvice: Site developers are NOT
users
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User Analysis
General Characteristics:
Learning StyleTool PreferencePhysical DifferencesCultural Differences
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Learning Style
How do users learn?
Read then DoDo then Read
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Tool Preference
Set of tools users are familiar with:
Drop Down menusComplex Searches
Find the Least Common Denominator
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Physical Differences
Accessibility issues:
Physical DisabilitiesColor PerceptionPerception of small objectsSmaller buttons require finer motor
control
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Cultural Differences
Geographicalor Not:EducationProfessionCorporate Culture
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Specific User Characteristics
Type of users actively visiting site
Why they use itWhat they are doingHow they are doing it
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Knowledge of Jobs
If site is part of work environment:
How do users do their job?Understand fit in workflow?Specialized vocabulary
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Application Familiarity
Determine users’ technical proficiency:
NoviceAdvanced BeginnerCompetent PerformerExpert
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Gathering Information
Who do you ask?
Managers?Developers?Primary UsersSecondary Users
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Gathering Information
Places to find information:
UsersCustomer ServiceTechnical SupportMarketing
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Task Analysis
Know what users do:
GoalsTasksActions
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Task Analysis
Build description of users’ duties:
What tasks are performedWhy perform themHow tasks are performed
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Goals
Starting point for task analysisWhat user want to accomplishIndependent of technology
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Tasks
Mechanism for accomplishing goals
Can be technology dependentComposed of sub-components called
Actions
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Granularity
Level or amount of detail in a taskBreak task into successively finer
stepsDepends on nature and scope of site
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Granularity
Workflow AnalysisJob AnalysisTask List
Task SequencesTask HierarchiesProcedural Analysis
Successively finer levels of granularity: