What an Information Architect Should Know About Prototypes for User Testing
http://www.boxesandarrows.com/archives/what_an_ia_should_know_about_prototypes_for_user_testing.php

Farnum, Chris
Boxes and Arrows
2002

Abstract:

There are several important factors to consider when you are planning to do prototyping for user testing. You will want to make careful choices about fidelity, level of interactivity and the medium of your prototype. Chris Farnum offers descriptions and best use scenarios to help you make the best prototype decision for your tests.