from Part VIII - Multimedia Learning with Media
Published online by Cambridge University Press: 19 November 2021
A pedagogical agent (PA) is a computerized humanlike onscreen image whose purpose is to guide the learner’s attention and facilitate learning. In this chapter, the main findings from research on pedagogical agents are reviewed and a meta-analysis is used to reveal the specific role of PAs on learning outcomes, yielding an effect size of g = .45 on transfer performance and g = .23 on retention performance. We also examine explanations for why PAs could have a positive effect on learning performance based on social agency theory, the embodiment principle, and the signaling principle. In addition, this chapter summarizes the main moderating variables for the effect of PAs, including characteristics of the learner such as the learner's prior knowledge, characteristics of the learning environment such as the subject matter, and characteristics of the PA such as voice and gesture.
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