Effects of Simultaneous Expression of Multiple Opinions by Single Agent on User’s Subjective Impression

Abstract

Improving users’ subjective impression of agents is essential for promoting continuous interaction between the agent and users and, consequently, demonstrating the agent’s original performance. We aim to realize that by imitating humans’ perceptible behaviors to lead them to imagine the agent’s inner state. As one of such perceptible behaviors, we focus on humans’ styles of expressing their opinions to others. A human often expresses several opinions at one time. Such behavior can be interpreted as a sign of hesitation in deciding and is expected to work as clues to lead people to imagine the person’s mind. In this paper, we implement the styles of expressing opinions simultaneously based on the theory of motivational conflicts into the agent and investigate the effects of the expression styles on the subjective impression through an evaluation experiment. Experimental results reveal that these styles have different effects on the impression of the agent.