Prototype critique

IMD07101: Introduction to Human Computer InteractionTom 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