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|Title:||Thin slices of interaction : predicting users’ task difficulty within 60 sec|
|Author(s):||Ferreira, João Pedro|
Sousa, Marta Noronha e
Ferreira, M. J.
|Abstract(s):||We report on an exploratory study where the first 60 seconds of the video recording of a user interaction are used to predict the user’s experienced task difficulty. This approach builds on previous work on “thin slices” of human-human behavior, and applies it to humancomputer interaction. In the scenario of interacting with a photocopy machine, automated video coding showed that the Activity and Emphasis predicted 46.6% of the variance of task difficulty. This result closely follows reported results on predicting negotiation outcomes from conversational dynamics using similar variables on the speech signal.|
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