Prototype critique IMD07101: Introduction to Human Computer Interaction Tom McEwan 2010/11

Structure Tend towards Adult communication rather than –Nurturing Parent –Controlling Parent –Free Child –Adapted Child In your existing groups –Each member present in 5 minutes to the others –Everyone note criticisms of usability and accessibility –Ask questions about People, Activities, Context, Technologies – eg who, what, where, and how –Decide which presentation has the best potential highlight usability and accessibility issues addressed –Refine those pages and prepare to present in second half One group (or individual) at a time – present to the class (5mins each). –Tell us for whom you are designing, what their goals are, and how your design helps –Members of the class critique each presentation –Distinguish between their personal preferences, and objective criticisms that refer to some external benchmark or principle

Criteria for criticising Accessibility –“This is for everybody” - when plainly it’s not PACT –Focus on features... or benefits? –Focus on tasks/interactions... or activities/goals Usability –Learnability –Effective Control/Feedback/Navigation Safety –Accomodating: Suitability/Style/Flexibility

Twelve Principles for good human-centred interactive systems design 1. Visibility 2. Consistency 3. Familiarity 4. Affordance 5. Navigation 6. Control 7. Feedback 8. Recovery 9. Constraints 10. Flexibility 11. Style 12. Conviviality