What are group norms, and what role do they play in behavior and cohesiveness of the group? How does the diversity of a group affect its performance?

What are group norms, and what role do they play in behavior and cohesiveness of the group? How does the diversity of a group affect its performance?

 

In a team-based situation, which is more effective: team or individual rewards? Why? Please support your position with a practical example.

 

In a team-based situation, which is more effective: team or individual rewards? Why? Please support your position with a practical example.