Printed screen-shots (paper prototypes) put together in packets in the same order that the screens would be displayed when users were carrying out the specific tasks. This includes hard copy panels of screens, dialog boxes, menus, etc presented in order.
...three types of participants in the same walkthrough : Representative users, product developers, and human factors professionals.
The ground rules ask all participants to assume the role of the user (whichever user class is being tested)
A pluralistic walkthrough is a usability inspection method whereby representative users (normally played by the evaluators)