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User-Centered Interaction Design (Last steps: Putting things together…
User-Centered Interaction Design
Interaction Design (IXD)
Defines the structure and behaviour of interactive products or services
Create compelling relationships between people and their interactive systems they use
Lay the groundwork for intangible experiences
User-Centered
Design is balanced between
User goals
Business objectives
Technological capabilities
Involves user feedback & research throughout the entire design process and development process
Users
Human factors
How people interact with technology
How tech affects human performance
Perceived Affordance: assumable use eg knobs / buttons
Visible constraints: electric plugs / firearm safety switch
Causality: feedback / blame/credit
Mapping: Possible relationships
Fitts Law: Pointing & acquiring targets
How people think:
Cognitive Psychology
Memory : Short term & Long term
Mental Models
Aesthetics / Appreciation
GOMS / KLM
How people live:
Ethnography
Observational Techniques
Rooted in sociology and anthropology"
Immerses an individual researcher or team in the everyday activities of an organisation or society
Ergonomics
Design of equipment to reduce operator discomfort
Science of designing equipment to fit human body
Know your audience
Likely truths:
You're probably not your target audience
Neither is your boss
You probably don't know as much about your target market as you should
User segmentation
Break users into managable chunks
Demographics: Gender, age etc.
Consider attitudes towards tech and lifestyle
Look at server logs and customer data
Listen everywhere: twitter/blogs/forums etc.
Begin user testing afterwards
Contextual enquiry: on-site observation
card sorting (tests labelling and subject matter)
usability testing: test task flows, wireframes, prototypes, live sites
Last steps: Putting things together
Understand Heuristics
Use patterns and components
Don't re-invent the wheel
Reduces ability to screw up tired and true interactions
Sweat the details
Think of all touch points, not just primary tasks
Plan for mistakes
People will use the system differently than you expect
Usability is an ideal
Some tasks will always be hard
Don't be penny wise and pound foolish
After launch
Continue to assess usability
Use logs to confirm people are using the site as you expect
continue monitoring the groundswell (twitter etc)