Define
Target User Community
–Accommodate Human Diversity:
no average user
–Account for variances in
sense perception
–Communities evolve and change
–Usage Profiles
Evaluation Measures
1.Time to learn
2.Speed of performance for key benchmarks
3.Rate and nature of common user errors
4.Retention over time
5.Subjective satisfaction
–Collect user feedback free-form comments and satisfaction scales
Create
& Test Design Alternatives
–Use a wide range of mock-ups and prototypes