In this latest view of subjects playing a computer game, brain activation patterns changed depending on whether people took a competitive or cooperative approach to the game. It's interesting to see that competition activated motivational brain areas similar to monetary reward, whereas cooperation activated brain areas associated with emotional reward and love.
Competition and cooperation can both be powerfully motivating factors in achievement, learning, and problem solving, but their importance may vary depending on the people involved, the context, or problem. Successful problem solving often involves a complex mixture of cooperation and competition (both interpersonal and internal) at various steps in the process.
Cooperation vs. Competition pdf
Rewards, Competition, and Constraints
Team Building Activities