CH 8, 9, & 10

CH 8, 9, & 10

1. Critique

   • Collaborative deconstructions
   • What makes it fail?
   • TWO-WAY
     • counter-judgement
   • ENGAGE DEEPLY
   • Goal: Help
   • Divergent & convergent
   • inherently negative
     • can be abusive
   • "simple rule: if you’re going to say something sharply negative, say something genuinely positive first, and perhaps something genuinely positive after as well."
     • Hamburger Rule
   • respect
   • Socratic Questioning
   • Leverages
     • intuition
     • expertise
     • judgement

2. Empiricism

   • participant response bias
   • Observations
   • empirical methods
     • limiting subjectivity
     • remove expert judgment
     • only observable phenomena
     • Usability Test
       • low cost
       • common task
       • learn lower-level problems
       • UI: layout, labeling, flow, etc.
       • failure breakdowns
       • define representative
       • tasks
       • goal
       • Why confused?
       • retrospective interview
       • perceptual phenomenon
         • didn’t notice something
         • what they noticed first
         • debrief with your participant
     • technology probe
     • experience sampling
     • ecological validity
     • A/B tests
       • context
       • popular in industry
       • difficult to come up with holistic measures of success

3. Analysis

   • "Judging"

4. Questions?

   • Clarification
   • Assumptions
   • Alternative perspectives
   • implications & consequences

5. Feedback

6. Expertise

   • in the DOMAIN
   • structure and dynamics of a problem

7. "good"

   • domain-dependent idea
   • intuitive
   • user-friendly
   • simple
   • novel
   • powerful
   • invisible
   • universal
   • just

8. evaluate analytically

   • Heuristic Evaluation
     • identify many of the same breakdowns that a user test would identify
   • Walkthroughs
   • claims analysis
     • collection of scenarios
   • cognitive modeling
     • how people reason about tasks
     • GOMS: Goals, Operators, Methods, and Selection Rules
   • Cognitive Walkthrough
     • task
     • prototype
     • persona
     • Will the user try to achieve the right effect?
     • Will the user notice that the correct action is available?
     • Will the user associate the correct action with the effect that the user is trying to achieve?
     • If the correct action is performed, will the user see that progress is being made toward the solution of the task?
     • GenderMag
       • user's motivation
       • user's information processing style
       • user's computer self-efficacy
       • user's stance toward risk-taking
       • user's strategy for learning
       • always find inclusiveness issues
   • Heuristic Evaluation
     • learnable
     • design heuristics
     • less vigilance
     • user interfaces should always make visible the system status.
     • real-world match
     • user control and freedom
       • “Cancel” and “Undo”
     • Consistency and standards
     • error prevention
     • recognition versus recall
     • Flexibility and user efficiency
     • Help users diagnose and recover from errors
     • offer help and documentation
     • minimalist design