Oh, A., Fox, H., Kleek, M. V., Adler, A., Gajos, K., Morency, L.-P., and Darrell, T. (2002). Evaluating look-to-talk: a gaze-aware interface in a collaborative environment. In CHI ’02: CHI ’02 extended abstracts on Human factors in computing systems, pages 650–651, New York, NY, USA. ACM Press. [pdf]

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This short paper describes an experiments where participant pairs had to answer trivia questions. To get to the next question the participants had to interact with a software agent displayed on the wall. In different experimental conditions they could interact with the agent using: voice, gaze or text input. The experiments showed that look-to-talk was a better choice for natural human-computer interaction.