Not Usability Testing• Focus Groups: • Small group of people • React to designs and ideas • Sampling of user’s opinions and feelings • Users’ want and needs analysis• Don’t tell whether people can use the product!
Usability Test• Watch users• Performing tasks• With sketches, prototypes or application• Note down their problems• Make recommendations• Again!
R.I.T.E.• More rounds of small scale (3-4 users) usability tests: • In the ﬁrst round of tests most of the signiﬁcant problems are encountered • Fix these problems!!! • In the second round most probably a new set of problems will be uncovered • Etc.
When, What and How?
Research• Develop usability goals: • Easy-of-use, learnability, rememberability • Benchmarks • Usability tasks• Usability Testing: • Competitive Products • Previous Versions• What to look for? • Like, hate or miss? • Fit in their workﬂow? • How hard to perform key tasks?
Requirements• Usability Testing: • Design concept • Metaphors • Screen ﬂow • Navigation model• What to look for? • Understand the concept? • Is this what they need? • Understand navigation?
Design• Usability Testing: • Detailed design • Interaction • Documentation• What to look for? • Understand the concept? • Is this what they need? • Can perform key tasks? • Satisﬁed?
Release• Usability Testing: • Check usability goals• What to look for? • Effectiveness? • Can-do vs. Will-do • Efﬁciency? • How fast perform tasks? • How many errors? • Satisfaction? • Tell friend about product?
Real-World Usability• Real users• Real tasks• Real environments• They use the system because they need it!