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Agents as building-blocks for usability tests in multi-user 3D environments

With the proliferation of virtual environments in real-world applications effective interface design and usability testing for virtual environments become increasingly important. Established design and test techniques from interactive system design like empirical evaluation can be applied to virtual environments, but their practical application encounters significant problems due to the special conditions of multi-user interaction. We describe an agent toolkit that simulates actions of other users to enable realistic tests with individual test subjects and without the need for extensive modification of the underlying application.