Work

http://socialmini09.hciresearch.org/content/applying-social-psychological-theory-problems-group-work-kraut-2002

Behaviour

http://en.wikipedia.org/wiki/Group_behaviour
Dynamics
http://www.lightbryan.com/groups/groups.html
Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=Group+Behavior
Tube
http://www.youtube.com/results?search_query=group+behavior