“…This aligns with Baylor's (2011) description of a genuine agent interaction, which consists of three factors: (1) how the agent appears to the learner, (2) how the agent communicates non-verbally with the learner, and (3) the type of content and discourse supported by the agent. In turn, prior research can be categorized around three themes (Shiban et al, 2015): (1) dialogue design (Johnson et al, 2004;Lin, Atkinson, Christopherson, Joseph, & Harrison, 2013); (2) advanced communication features, like displays of emotion and gestures (Allmendinger, 2010;Olney et al, 2012;Visschedijk, Lazonder, van der Hulst, Vink, & Leemkuil, 2013); and (3) agent appearance (Bailenson, Blascovich, & Guadagno, 2008;Baylor, 2011;Baylor & Kim, 2009;Veletsianos, 2010).…”