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HCI/ECT 441 Dr. Craig Barnes [email protected] Office Hours: Tues 5:00pm-5:45pm Tues 9:00pm-9:45pm Office: ? ECT/HCI 441 - Course Info Course Web Site: www.evl.uic.edu/barnes/HCI441 Check it often. Course Grading Homeworks: User Testing: Final: Individual Contribution: 40% 15% 35% 10%* Disciplines contributing to HCI Web Usability Problems Web Usability Problems Web Usability Problems Web Usability Problems Web Usability Problems Web Usability Problems User Centered Development Differs from traditional software development: User Centric Interdisciplinary Highly iterative User Centered Development Initial Stages: Needs Analysis User and Task Analysis Functional Analysis Requirements Analysis Needs Analysis Simple Description of Type of System Audience User Analysis Characterizes potential user of site: General Demographics Context of Use User Analysis Benefits: Cost reduction in: development & maintenance Support Training Increased sales User Analysis Key: Know your user Advice: Site developers are NOT users User Analysis General Characteristics: Learning Style Tool Preference Physical Differences Cultural Differences Learning Style How do users learn? Read then Do Do then Read Tool Preference Set of tools users are familiar with: Drop Down menus Complex Searches Find the Least Common Denominator Physical Differences Accessibility issues: Physical Disabilities Color Perception Perception of small objects Smaller buttons require finer motor control Cultural Differences Geographical or Not: Education Profession Corporate Culture Specific User Characteristics Type of users actively visiting site Why they use it What they are doing How they are doing it Knowledge of Jobs If site is part of work environment: How do users do their job? Understand fit in workflow? Specialized vocabulary Application Familiarity Determine users’ technical proficiency: Novice Advanced Beginner Competent Performer Expert Gathering Information Who do you ask? Managers? Developers? Primary Users Secondary Users Gathering Information Places to find information: Users Customer Service Technical Support Marketing Task Analysis Know what users do: Goals Tasks Actions Task Analysis Build description of users’ duties: What tasks are performed Why perform them How tasks are performed Goals Starting point for task analysis What user want to accomplish Independent of technology Tasks Mechanism for accomplishing goals Can be technology dependent Composed of sub-components called Actions Granularity Level or amount of detail in a task Break task into successively finer steps Depends on nature and scope of site Granularity Successively finer levels of granularity: Workflow Analysis Job Analysis Task List Task Sequences Task Hierarchies Procedural Analysis