9Taylor, J. C .Teaching and Learning Online: l.urkers, Shirkers and Workers, Paper presented at the 2002 Coferenee on Research in Dis- tance @ Adult Learning in Asia. Retrieved July 28, 2013 ftom hltp:// www.ouhk.edu.hk/CRIDAL/eridala2002/speeches/taylor.pdf.
10Kreijnsa, K., Kirschnerh,P. A., & Joehemsh, W .Identifying the pit- falls for social interaction in computer-supported collaborative learn- ing environments: a review of the research[J]. Computers in Human Behavior, 2003, 19(3): 335-353.
