1.What kinds of information and insights did it give you about

the usability of the prototype?

As an evaluator, I carefully observe the users and record their

facial expression, body language and intuitive comments. While

testing, the users would express their feelings by words and

actions.

2) What aspects of the technique worked well or were frustrating?

During the process of observation, I found I can quickly capture

the user in the process of using and record some of the facial

expressions and comments. However, I was confused about

the meaning of certain facial expression. And some users don’t

use to talk aloud while working, although this is a very good

technology.

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