By Robert Larmore Lisa Paul Palathingal 02202014 Introduction Iterative evaluationcentered UX lifecycle template Iterative Process All or part is repeated for the purpose ID: 684848
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Chapter 2The Wheel: A Lifecycle Template
By, Robert Larmore Lisa Paul Palathingal
02/20/2014Slide2
IntroductionIterative, evaluation-centered, UX lifecycle template
Iterative Process: All or part is repeated for the purpose
of exploring,
fixing or refining a design
Lifecycle: Structured framework consisting of a series of stages and corresponding activities
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Four basic abstract activities
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The Wheel
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UX process activities Analyze
Design Implement
Evaluate
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UX process activities Analyze
Design Implement
Evaluate
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UX process activities Analyze: Understanding the business domain, user
work and user needsSub-activities:
Contextual Inquiry
Contextual analysis
Extracting requirementsSynthesizing design-informing models
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UX process activities Analyze
Design Implement
Evaluate
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UX process activities Design: Creating conceptual design, interaction behavior, and look and feel
Sub-activities:Design ideation and sketchingMental models and conceptual designDesign production
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UX process activities Analyze
Design Implement
Evaluate
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UX process activities Implement: Prototyping
Types:VerticalHorizontalTLocal
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UX process activities Analyze
Design Implement
Evaluate
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UX process activities Evaluate: Verifying and refining interaction design
Methods:Rapid evaluation
Fully rigorous
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Flow among UX process activities
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Flow among UX process activitiesActivities can overlap
Objective:Move forward to production
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Managing the process with activity transition criteriaTeam must be able to decide:
When to leave an activityWhere to go after any given activityWhen to revisit a previous process activityWhen to stop making transitions and proceed to production
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Managing the process with activity transition criteriaAnswers depend on transition criterion:
Whether designers have met the goals and objectives Whether there are adequate resources (time and budget) remaining to continue
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Choosing a process instance for projectFactors:
Risk toleranceProject goalsProject resourcesType of system being designedStage of progress within project
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Project ParametersRisk: Things going wrongFeatures or requirements being missing
Not meeting needs of usersThe less tolerance for risks, the more need for rigor and completeness in the process
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Project ParametersResources:Budget
SchedulePerson Power
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Practitioners with extensive experience need less rigorous process21Project ParametersSlide22
Project ParametersType of system being designed:Example: mp3
player vs. air traffic control systemStage of progress within project:Early stage: Analysis
Later stage: Evaluation
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Mapping project parameters to process choices
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The system complexity space
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Interaction complexityAbout elaborateness of user actions to accomplish tasks in the system
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Interaction complexityLow interaction complexity:
smaller, easier tasks Example: ordering flowers from a
Website
High interaction
complexity:
larger
, more difficult
tasks
requires
special skills or training
Example: manipulating
a color image with Adobe
Photoshop
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