Study on Sensitivity to ECA Behavior Parameters

  • Ladislav Kunc
  • Pavel Slavík
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5773)


Embodied conversational agents (ECAs) provide one possible way of incorporating nonverbal portion of speech into voice based user interfaces. Part of agent’s visual behavior and its appearance is often solved “statically.” There is another possibility to change appearance - dynamically (for example head or eye movements, mouth opening, etc.). Our hypothesis is that some “dynamic” parameters are more important for the user than the other ones. In this paper we present the pilot user study and statistical evaluation of four parameters. Eye blinking is one of the parameter we investigate. The importance of agent’s gaze (blinking as part of it) was discussed several times for example by Raidt [1].


  1. 1.
    Raidt, S., et al.: Gaze Patterns during Face-to-Face Interaction. In: The Int. Conf. on Web Intelligence and Intelligent Agent Technology, pp. 338–341 (2007)Google Scholar
  2. 2.
    Kunc, L., Kleindienst, J.: ECAF: Authoring Language for Embodied Conversational Agents. In: Text, Speech and Dialogue, pp. 206–213 (2007)Google Scholar
  3. 3.
    Thurstone, L.L.: A law of comparative judgment. Psychological Review 34, 273–286 (1927)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Ladislav Kunc
    • 1
  • Pavel Slavík
    • 1
  1. 1.Faculty of Electrical EngineeringCzech Technical University in PragueCzech Republic

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