“She is just stupid”—Analyzing user–agent interactions in emotional game situations

A multiplayer dice game was realized which is played by two users and one embodied conversational agent. During the game, the players have to lie to each other to win the game and the longer the game commences the more probable it is that someone is lying, which creates highly emotional situations. We ran a number of evaluation studies with the system. The specific setting allows us to compare user–user interactions directly with user–agent interactions in the same game. So far, the users’ gaze behavior and the users’ verbal behavior towards one another and towards the agent have been analyzed. Gaze and verbal behavior towards the agent partly resembles patterns found in the literature for human–human interactions, partly the behavior deviates from these observations and could be interpreted as rude or impolite like continuous staring, insulting, or talking about the agent. For most of these seemingly abusive behaviors, a more thorough analysis reveals that they are either acceptable or present some interesting insights for improving the interaction design between users and embodied conversational agents.