“…These interactions are important as they can influence students' participation (Jorge, 2010;Mazzolini & Maddison, 2007;Swan & Shih, 2005;Tao, 2009;Tu & McIsaac, 2002), course and instructor satisfaction (Akyol & Garrison, 2008;Cobb, 2011;Gunawardena & Zittle, 1997;Hostetter & Busch, 2006;Richardson & Swan, 2003), actual and perceived learning (Hostetter & Busch, 2013;Joksimović, Gašević, Kovanović, Riecke, & Hatala, 2015;Kang & Im, 2013;Picciano, 2002;Richardson & Swan, 2003;Russo & Benson, 2005;Wise, Chang, Duffy, & del Valle, 2004), and even retention rates (Boston, Diaz, Gibson, Ice, Richardson, & Swan, 2009;Liu, Gomez, & Yen, 2009;Reio & Crim, 2013). In addition to facilitating learning (e.g., encouraging students and providing tips, being an active voice in course discourse), the instructor role often includes designing curricular materials, managing the learning process and environment (e.g., providing organization of course activities and content, maintaining the flow of the course), and providing a social presence to overcome a feeling of disconnect or isolation among students (e.g., using greetings, names, humor, and self-disclosure; Dennen, Darabi, & Smith, 2007;Richardson et al, 2015).…”