“…Research has investigated ways to enhance critical thinking outcomes by focusing on what instructors can implement, including the introduction of protocols in AOD (Hew & Cheung, 2011;Zydney et al, 2012), use of supporting materials (Alexander, Commander, Greenberg, & Ward, 2010;Bai, 2009), AOD design (Darabi, Arrastia, Nelson, Cornille, & Liang, 2011;Kalelioglu & Gulbahar, 2014;Richardson & Ice, 2010), message labelling (Schellens, VanKeer, DeWeaver, & Valcke, 2009;Topcu, 2010), and the use of student facilitation (Hew & Cheung, 2008;Xie, Yu, & Bradshaw, 2014). Other studies have focused on how critical thinking can be evaluated within the AOD using some form of content analysis of discussion transcripts (Beckmann & Weber, 2016;Darabi et al, 2011).…”