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Chapter 5: The process of interaction design - Coggle Diagram
Chapter 5: The process of interaction design
USER-CENTERED APPROACH
It's a process
A goal-directed problem solving activity informed by intended use, target domain, materialism cost and feasibility
A creativity activity
A decision-making activity to balance trade-offs
It's a representation
Plan for development
Set of alternatives and successive elaborations
Four basic activities in Interaction Design
Establishing requirements
In order to design - must know your target users
What kind of support an interactive products could usefully provide
Fundamental to user-centered approach
Understanding these needs through data gathering and analysis
Designing alternatives
Conceptual design
Producing the conceptual model for the product
Describes the outline what people can do with the product and what concepts are needed to understand how to interact with it
Physical design
Details of the product including colours, sounds, images, menu design, icon design
Prototyping
Involves designing interactive products
The most sensible ways for users to evaluate such designs is to interact with them
Paper-based prototypes are very quick and cheap to build and very effective to identifying problems in early stages of design
Through role-playing users can get a real sense of what it will be like to interact with the product
Evaluating
Evaluation is the process of determining the usability and acceptability of the product or design
Testing to make sure that the final product is fit-for-purpose
Where do altetextrnatives come from
Humans stick to what they know works
But considering alternatives is important to 'break out of the box'
Designers are trained to consider alternatives, software people generally are not
"Flair and creativity': research and synthesis
Seek inspiration: Look at similar products or look at very different products
How to choose alternative designs?
Evaluation with users or with peers
Technical feasibility: some not possible
Quality thresholds: Usability goals lead to usability criteria set early on and check regularly
Safety
Utility
Effectiveness
Learnability
Memorability