Document reviews involve users reviewing and commenting on functional requirements and external design specifications at their convenience. Bear in mind, however, that a functional requirement may not be entirely comprehensible to your user group as they are not systems designers. One way to help them envision what a final design might look like within a familiar context is by writing an activity scenario and illustrating it with sample screen designs. These illustrated scenarios serve to communicate the design and how it would work within the context of use. Scenario text, eg.
Opinion surveys function like a focus group by gathering the opinions of a group.
However, they are completed at the convenience of the user. Usability walkthroughs and jogthroughs and focus groups require more active group participation at a fixed time, as well as facilitation. Usability walkthroughs and jogthroughs involve demonstrating the user interface on paper while gathering feedback on expectations, terminology, clarity etc. Focus groups bring groups of users together to discuss what they like and don t like about an application or concept. These tend to uncover more functionality issues rather than strict usability issues.