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Introduction to User Experience Principles and Processes (Week 6) - Coggle…
Introduction to User Experience Principles and Processes (Week 6)
Heuristic Evaluation
Introduction
A "Discount" UX research method
Fast
No Users!
Cheap
An "inspection" Method
A systematic "close read" of an user interface
Apply heuristics to find and explain problems
How it works?
Choose a set of screen or interactions for focus
Step through, applying heuristics to find potential problems
be sure to test error cases
be sure to look at help system (if any)
3.Write down all violations, big and small
note down the heuristics that they violate
4.Assess the severity of each problem (that annoys users)
Assessing Severity
2 = minor usability problem ; fix if there is time
3 = major usability problem; important to fix
1 = cosmetic problem; no real usability impact
4 = usability catastrophe ; imperative to fix
Create priortised list of problems to fix
Priortizing
Ranked in decreasing order of severity
Use heuristic to explain why it matter
HIghlight top 5 - 10 problems
Multiple Evalustors is better
5 pax find 75% true problem
10 pax find 85% true problem
1 pax find 35% true problem
Sweet spot is a team of 3 to 5 pax
However, Solo evaluator can also be very valuable!
Proxy for usability testing
Heuristics evaluation (Cheap, fast and don't "use up" potential users)
document violation
access severity
use nielsen's heuristics
priortise biggest problem and document them to guide further development and further improvement of the UI
User's Testing
find more problems
assess other UX qualities beyong usability
more realistic
Both methods are used in iteration design and evaluation process
Steps
Perform a heuristics evalutation (to shake out the bugs in the design that you have produced)
User testing (to see if you have got it right)
More User's testing
Refined Prototype
User's testing
Course Wrap Up
Designing for Humans
Understand design principles for usable systems
Learn an inspection method that we can use
Understand perception and cognition
Explore more!
Componenets of UX
Usability
Focus of this course
Book - Don Norman " The design of everyday things"
Book - Jeff Johnson "Designing with mind in mind"
Book - Steve Krug "Don't make me think"
Desirability
Designing relationship eg. service design - customer journeys - multiple touchpoints
Book - Don Norman " Emotional Design"
Visceral - Past, Primitive
Behavioral - Based on use
Reflective - Based on Association
Marc Hassenzahl "Asthetics and Experiences"
Value
Book - "Observing the user experience" by Goodman
isn't much we can say, different people have different needs, make sure our system satisfy them
Accessibility
How easy to find and use the product
Web accessibilty (University of Washington example)