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User and Task Analysis Determine the boundaries of the system/network
Identify users Collect information from/about uses Interviews Interviewing methods Observations Environment Work practices, tools Document analysis Generate a user-task matrix
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Grade system USERS TASKS Faculty students staff View student list x
Enter grades View grades Only own Generate summary reports
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Identifying users What is the system (service, product, and so forth)?
Goals Boundaries How decided mandated – by organizational goals, client… In the course of interviews In discussions with client, team…
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Social Construction of Technology (SCOT)
Identify & describe relevant social groups Sociologically deconstruct the artifact for what it means for each group Develop requirements, design that meets various groups’ needs, preferences The same artifact may solve different problems for different user groups Any one problem/need has multiple solutions Trying to find the overlap where one design will satisfy multiple groups with different needs
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Sociotechnical networks
Amalgam of people, practices, standards, rules, understandings, tools…. Social and material
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Types of Users Decision makers (e.g., purchasers)
Market researchers tend to concentrate on the people who buy; designers on the people who perform tasks. Primary users (do the work) Secondary users -- E.g., the customer of the travel agent Surrogate users -- e.g., librarians, customer service reps May not speak effectively for the products’ users. (But may be efficient source of information –) Gatekeepers, early adopters
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CourseWeb: course web pages
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Users’ characteristics
Job/task/domain-related When relevant, technology-related Personal Physical, cultural, motivational… Other?
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H&R: users based on stages of use (expertise)
Novices May be new to subject, technology, product Are goal and task-oriented May not want to learn, but do Advanced beginners Use infrequently and incidentally Are focused on getting job done as quickly and painlessly as possible Have begun to form mental model or concept of how system works Concentrate on a few needed tasks which can perform well
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H&R: users based on stages of use (expertise) II
Competent performers Have learned enough tasks that they have sound mental model of subject and product Can recognize incorrect series of actions and correct them Expert performers Use frequently as integral part of activity Have considerable subject matter knowledge Are skilled at solving problems Have comprehensive understanding of whole
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Goals, Tasks, Activities
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Goals Defined in USERS’ terms (I.e., not YOURS) Multiple
Sometimes conflicting Between individual and organization Between individuals, workgroups, etc. Within individual Can change over time What do people do when problems, conflicts?
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Tasks What someone does to achieve a goal Multi tasks, same goal
See how people choose tasks to achieve goals Time, effort, what they already know, history, habit, social pressure/models… Differences across users… What people do when problems – give up goal, change tasks… Changing tasks, goals Improvisation
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Activities Specific actions Intentional and otherwise
Importance of unintentional consequences of intentional action
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Suchman on plans and situated action
Some see plans as either formal structures that control action or abstractions across instances. Instead, argues plans are resources for situated action. Inherently vague; detail of intent and action contingent on circumstantial and interactional particulars of situation. Foundation of action is not plans but local interactions with our environment more or less informed by abstract representations of situations and actions. They position us to, thru local interactions, exploit some contingencies and avoid others. Rafting as an example.
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Types and levels of task analysis
Workflow analysis Job analysis Process analysis, task sequence Task hierarchies Procedure analysis: how they do it now. Technology-dependent. Pay attention to exceptions
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Doing task analysis – possible foci
Job – multi people this job Person – not just in the job Task – more than one person Place Flow of information, artifacts
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Types of Interviews Structured Semi-structured
Informal, conversational Group Individual
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Related: Mental models Scenarios Personas
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Collecting data from users
Questionnaires Interviews Focus groups
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Setting Up Field Studies
Write down issues and objectives Identify participants to represent groups that you need to talk with Plan 1-2 hour visits with time between users Screen users with a questionnaire
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Selecting participants
People who represent various activities, points of view, experience and skill levels Look for people who are thoughtful and articulate Ask around – see who gets recommended Beware of the person who wants to be your ‘best friend’ But key informants are invaluable: people who know a lot and will share it with you
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Preparing for Field Studies
Form team – 1-2 observers for each user, include marketing and development Train team to observe and interview and to avoid being experts or defensive Demographic questionnaire, release forms Audio taping equipment, camera Notebook for taking notes, sketching environment
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Preparing for interviews
Do it in their environment if you can – but be aware of problems of noise, interruption, confidentiality NOTICE things Send them ahead of time about purpose of study, who you are, why you are coming, what you will ask them about Tell them how much time you expect to need, and don’t run overtime without their agreement
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The interview Begin by establishing rapport
Who you are, purpose, confidentiality Establish stop time and how firm Tape if you can; offer to turn the tape off at any time Note-taking ‘Walking out the door’ comments – often the most useful!
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Observing in Field Studies
Take pictures, sketch the environment Note everything the user does, what triggers it Who does the user interact with What paper or information is passed Get copies of artifacts, preferably used Where does task end, does the user know what happens next
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Interviewing in Field Studies
Ask about goals, don’t just focus on tasks, listen for goals for the benefit of others Probe goals, tasks presented as goals Neutral vs. leading or blaming questions Don’t be shy, ask for more information, provide active feedback that you are listening Ask user if your interpretation is correct, listen for “no” in pauses, maybes
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Gaining Trust Explain clearly the purpose of study, why you want to talk to them PROMISE CONFIDENTIALITY Be honest Be interested Be sympathetic – but not artificially so LISTEN How you talk about others is how they assume you will talk about them Re sources of conflict
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Contextual inquiry
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