Applicable stages: design, code, test, and deployment.
Personnel needed for the evaluation: Usability experts: 1 Software developers: 0 Users: 4	Usability issues covered: Effectiveness: Yes Efficiency: No Satisfaction: Yes
Can be conducted remotely: No	Can obtain quantitative data: No

 Overview

During a usability test, let the test users interact with the system first, so that they get familiar with it and acquire some expertise in accomplishing tasks using the system. Then introduce a naive user to each test user. The Novice users are briefed by the tester to limit their active participation and not to become an active problem-solver. Each test user is asked to explain to the novice how the system works and demonstrate to him/her a set of pre-determined tasks. This technique can be used for the following development stages: design, code, test, and deployment.

References

1. P. Vora & M. Helander "A Teaching method as an alternative to the concurrent think-aloud method for usablity testing", in Y. Anzai, K. Ogawa & H. Mori "Symbiosis of Human and Artifact", pp.375-380, 1995.