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Article: Constructing knowledge from dialog in an intelligent tutoring system: interactive learning, vicarious learning, and pedagogical agents.
- Article from:
- Journal of Educational Multimedia and Hypermedia
- Article date:
- June 22, 2004
- Author:
CopyrightCOPYRIGHT 2004 Association for the Advancement of Computing in Education (AACE). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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College students either interacted directly with an intelligent
tutoring system, called AutoTutor, by contributing to mixed
initiative dialog, or they simply observed, as vicarious
learners, previously recorded interactive sessions. The mean
pretest to posttest effect size (Cohen's d) across two studies
was 1.86 in the interactive conditions and 1.12 in standard
vicarious conditions. In Experiment 1, redundant onscreen
printed text produced an effect size of 0.43, but the
difference was not significant. In addition, the image of a
talking head presenting AutoTutor's contributions to ...