A Comparison of Two Evaluation Techniques for Technical Documentation
http://www.surl.org/usabilitynews/71/evaluative_techniques.asp

Rogers, Bonnie Lida, Chris Hamblin and Alex Chaparro
Usability News
2005

Abstract:

This study compared two evaluation techniques, Usability Testing and Cognitive Walkthrough, in their ability to identify errors in aviation maintenance documentation. The techniques were evaluated to see how much unique information they each produced as well as the type of errors identified. Results showed that the techniques were complementary in their findings and both are recommended in the development of technical documentation.