“…Collaborative work, for example, provides cognitive support and encourages critical thinking, problem solving, and deeper learning through the formation of a learning community (Fulford & Zhang, 1993;Kearsley, 1995;Moore & Kearsley, 1996;Friesen & Kuskis, 2013;Picciano, 2001;Salmon, 2002Salmon, , 2004Scardamalia & Bereiter, 2006;Sherry, 1995). Additionally, effective interpersonal interaction can enhance students' sense of "social presence"-the degree to which a person is perceived as a "real person" in mediated communication-and thereby support students' psychological connection to the course (e.g., Gunawardena & Zittle, 1997;Shearer, 2013;Short, Williams, & Christie, 1976;Young, 2006). One meta-analysis examining studies of interaction in online learning environments concluded that increased interpersonal interaction, either with the instructor or other peers, positively affects student learning (Bernard et al, 2009).…”