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Erschienen in:
2010 | OriginalPaper | Buchkapitel
The Persona Zero-Effect: Evaluating Virtual Character Benefits on a Learning Task with Repeated Interactions
verfasst von : Jan Miksatko, Kerstin H. Kipp, Michael Kipp
Erschienen in: Intelligent Virtual Agents
Verlag: Springer Berlin Heidelberg
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Embodied agents have the potential to become a highly natural human-computer interaction device – they are already is use as tutors, presenters and assistants. However, it remains an open question whether adding an agent to an application has a measurable impact, positive or negative, in terms of motivation and learning performance. Prior studies are very diverse with respect to design, statistical power and outcome; and repeated interactions are rarely considered. We present a controlled user study of a vocabulary trainer application that evaluates the effect on motivation and learning performance. Subjects interacted either with a no-agent and with-agent version in a between-subjects design in repeated sessions. As opposed to prior work (e.g. Persona Effect), we found neither positive nor negative effects on motivation and learning performance, i.e. a
Persona Zero-Effect
. This means that adding an agent does not benefit the performance but also, does not distract.