B. Baltes, Computer-Mediated Communication and Group Decision Making: A Meta-Analysis, Organizational Behavior and Human Decision Processes, vol.87, issue.1, pp.156-179, 2002.
DOI : 10.1006/obhd.2001.2961

B. Barron, When Smart Groups Fail, Journal of the Learning Sciences, vol.24, issue.2, pp.307-359, 2003.
DOI : 10.1037//0022-0663.87.3.406

J. Brown, A. Collins, and P. Duguid, Situated Cognition and the Culture of Learning, Educational Researcher, vol.18, issue.1, pp.32-42, 1989.
DOI : 10.3102/0013189X018001032

R. L. Daft, R. H. Lengel, and L. K. Trevino, Message Equivocality, Media Selection, and Manager Performance: Implications for Information Systems, MIS Quarterly, vol.11, issue.3, pp.355-366, 1987.
DOI : 10.2307/248682
URL : http://aisel.aisnet.org/cgi/viewcontent.cgi?article=2040&context=misq

N. Ducheneaut, N. Yee, E. Nickell, and R. J. Moore, The life and death of online gaming communities, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '07, pp.839-848, 2007.
DOI : 10.1145/1240624.1240750

A. Dutson, A Review of Literature on Teaching Engineering Design Through Project-Oriented Capstone Courses, Journal of Engineering Education, vol.21, issue.no. 3, pp.17-25, 1997.
DOI : 10.1109/TE.1983.4321601

J. Fjermestad, An analysis of communication mode in group support systems research, Decision Support Systems, pp.239-263, 2004.

R. Hertz-lazarowitz and I. Bar-natan, Writing development of Arab and Jewish students using cooperative learning (CL) and computer-mediated communication (CMC), Computers & Education, vol.39, issue.1, pp.19-36, 2002.
DOI : 10.1016/S0360-1315(02)00019-2

K. H. Hew and W. S. Cheung, Use of three-dimensional (3-D) immersive virtual worlds in K-12 and higher education settings: A review of the research, British Journal of Educational Technology, vol.54, issue.2, pp.33-55, 2010.
DOI : 10.4018/jcit.2006100105

E. Hobman, The Expression of Conflict in Computer-Mediated and Face-To-Face Groups, Small Group Research, vol.19, issue.3, pp.439-465, 2002.
DOI : 10.1111/j.1468-2958.1992.tb00295.x

L. Irani, G. R. Hayes, and P. Dourish, Situated practices of looking, Proceedings of the ACM 2008 conference on Computer supported cooperative work, CSCW '08, pp.187-197, 2008.
DOI : 10.1145/1460563.1460592

J. Janssen, Visualization of participation: Does it contribute to successful computer-supported collaborative learning?, Computers & Education, vol.49, issue.4, pp.1037-1065, 2007.
DOI : 10.1016/j.compedu.2006.01.004

K. Johnsen, A. Raij, A. Stevens, S. Lind, and M. D. Lok, K: The validity of a virtual uuman experience for interpersonal skills education, Proceedings CHI 2010, pp.1049-1058, 2010.

S. Johnson, S. Aragon, N. Shaik, and N. Palma-rivas, Comparative analysis of learner satisfaction, and learning outcomes in online, and face-to-face learning environments, Journal of Interactive Learning Research, vol.11, issue.1, pp.29-49, 2000.

H. Maldonado, S. Klemmer, and R. Pea, When is collaborating with friends a good idea? insights from design education, Proceedings of the 9th international conference on Computer supported collaborative learning, CSCL'09, 2009.
DOI : 10.3115/1600053.1600087
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.160.1249

D. C. Neale, J. M. Carroll, and M. B. Rosson, Evaluating computer-supported cooperative work, Proceedings of the 2004 ACM conference on Computer supported cooperative work , CSCW '04, pp.112-121, 2004.
DOI : 10.1145/1031607.1031626

C. Neustaedter and E. Fedorovskaya, Capturing and sharing memories in a virtual world, Proceedings of the 27th international conference on Human factors in computing systems, CHI 09, pp.1161-1170, 2009.
DOI : 10.1145/1518701.1518878
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.651.9699

A. Newcomb and C. Bagwell, Children's friendship relations: A meta-analytic review., Psychological Bulletin, vol.117, issue.2, pp.306-347, 1995.
DOI : 10.1037/0033-2909.117.2.306

G. M. Olson and J. S. Olson, Technology support for collaborative workgroups, Coordination theory and collaboration technology, pp.559-584, 2001.

A. Ortony, G. L. Clore, and A. Collins, The cognitive structure of emotions, 1988.
DOI : 10.1017/CBO9780511571299

D. Pinelle and C. Gutwin, A review of groupware evaluations, Proceedings IEEE 9th International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (WET ICE 2000), pp.86-91, 2000.
DOI : 10.1109/ENABL.2000.883709

G. Salmon, The future for (second) life and learning, British Journal of Educational Technology, vol.40, issue.1, pp.526-538, 2009.
DOI : 10.1080/09687760802526731
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.474.3171

R. Schroeder, I. Heldal, and J. G. Tromp, The Usability of Collaborative Virtual Environments and Methods for the Analysis of Interaction, Presence: Teleoperators and Virtual Environments, vol.15, issue.4, pp.655-667, 2006.
DOI : 10.1162/105474603765879512

P. Shah and K. Jehn, Do friends perform better than acquaintances? The interaction of friendship, conflict, and task, Group Decision and Negotiation, pp.149-165, 1993.

S. Straus, Technology, Group Process, and Group Outcomes: Testing the Connections in Computer-Mediated and Face-to-Face Groups, Human???Computer Interaction, vol.25, issue.3, pp.227-266, 1997.
DOI : 10.1016/0749-5978(92)90070-N

A. Strauss and J. Corbin, Basics of qualitative research, 1998.

A. G. Sutcliffe, Designing for User Engagement: Aesthetic and Attractive User Interfaces, Synthesis lectures on human centered informatics, 2009.
DOI : 10.2200/S00210ED1V01Y200910HCI005

L. Thompson and M. Coovert, Teamwork online: The effects of computer conferencing on perceived confusion, satisfaction and postdiscussion accuracy., Group Dynamics: Theory, Research, and Practice, vol.7, issue.2, pp.135-151, 2003.
DOI : 10.1037/1089-2699.7.2.135

N. Tractinsky, A. S. Katz, and D. Ikar, What is beautiful is usable, Interacting with Computers, vol.13, issue.2, pp.127-145, 2000.
DOI : 10.1016/S0953-5438(00)00031-X
URL : https://academic.oup.com/iwc/article-pdf/13/2/127/2668972/iwc13-0127.pdf

N. Tractinsky and D. Zmiri, Exploring attributes of skins as potential antecedents of emotion in HCI Aesthetic computing, 2005.

J. G. Tromp, A. Steed, and R. Wilson, Systematic usability evaluation and design issues for collaborative virtual environments, Presence: Teleoperators and Virtual Environments, pp.241-267, 2003.
DOI : 10.1162/105474603765879512

C. Wickens, Multiple resources and performance prediction, Theoretical Issues in Ergonomics Science, vol.1, issue.2, pp.150-77, 2002.
DOI : 10.1037/0096-1523.2.1.1
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.602.5010

B. G. Witmer and M. J. Singer, Measuring Presence in Virtual Environments: A Presence Questionnaire, Presence: Teleoperators and Virtual Environments, vol.2, issue.3, pp.225-240, 1999.
DOI : 10.1006/ijhc.1996.0060

R. Zajac and W. Hartup, Friends as Coworkers: Research Review and Classroom Implications, The Elementary School Journal, vol.98, issue.1, pp.3-13, 1997.
DOI : 10.1086/461881