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<Paper uid="W03-0205">
  <Title>A Comparison of Tutor and Student Behavior in Speech Versus Text Based Tutoring</Title>
  <Section position="1" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> This paper describes preliminary work in exploring the relative effectiveness of speech versus text based tutoring. Most current tutorial dialogue systems are text based (Evens et al., 2001; Rose and Aleven, 2002; Zinn et al., 2002; Aleven et al., 2001; VanLehn et al., 2002). However, prior studies have shown considerable bene ts of tutoring through spoken interactions (Lemke, 1990; Chi et al., 1994; Hausmann and Chi, 2002). Thus, we are currently developing a speech based dialogue system that uses a text based system for tutoring conceptual physics (VanLehn et al., 2002) as its back-end . In order to explore the relative effectiveness between these two input modalities in our task domain, we have started by collecting parallel human-human tutoring corpora both for text based and speech based tutoring. In both cases, students interact with the tutor through a web interface. We present here a comparison between the two on a number of features of dialogue that have been demonstrated to correlate reliably with learning gains with students interacting with the tutor using the text based interface (Ros*e et al., submitted).</Paragraph>
  </Section>
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