“…For example, Huang (2002) discussed instructional principles for guiding adult learning in online environments, and concluded that constructivist principles provide useful ideas to help educators create learner-centered and collaborative environments. Other studies have emphasised issues regarding inner motivation (Merriam, Caffarella, & Baumgartner, 2012), self-direction (Burge & Frewin, 2014;Kenner & Weinerman, 2011), flexibility (Bash, 2003;Eastmond, 1998), and the process of learning (Roberson & Merriam, 2005). Most importantly, they focus on the fact that instructors should recognise adults' learning needs, which may be different from those of children or traditional college students (Cercone, 2008).…”