Engagement vs. Deceit: Virtual Humans with Human Autobiographies

  • Authors:
  • Timothy Bickmore;Daniel Schulman;Langxuan Yin

  • Affiliations:
  • Northeastern University College of Computer and Information Science, Boston 02115;Northeastern University College of Computer and Information Science, Boston 02115;Northeastern University College of Computer and Information Science, Boston 02115

  • Venue:
  • IVA '09 Proceedings of the 9th International Conference on Intelligent Virtual Agents
  • Year:
  • 2009

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Abstract

We discuss the ethical and practical issues involved in developing virtual humans that relate personal, fictitious, human autobiographical stories ("back stories") to their users. We describe a virtual human exercise counselor that interacts with users daily to promote exercise, and the integration of a dynamic social storytelling engine used to maintain user engagement with the agent and retention in the intervention. A longitudinal randomized controlled experiment tested user attitudes towards the agent when it presented the stories in first person (as its own history) compared to third person (as happening to humans that it knew). Participants in the first person condition reported enjoying their interactions with the agent significantly more and completed more conversations with the agent, compared to participants in the third person condition, while ratings of agent dishonesty were not significantly different between the groups.