Fear alone is not highly likely to inspire cooperative behavior to the degree observed among humans.

Of course voluntary cooperative behavior is common in your locale.

Voluntary cooperative behavior is the basis of human existence.

Do you feel that such institutions play no part in the cooperative behavior between states and continuing stability?

Such punishment, they say, is how the host favors cooperative behavior on the part of its guests.

He reviewed experimental data showing that cooperative behavior is indeed more common in smaller groups.

Such cooperative behavior, however, does not necessarily result in the equal sharing of resources among cooperating individuals.

Determining the evolutionary context of cooperative behavior can be difficult.

Another study found more cooperative behavior the greater the number the perceived kin in a group.

Common vampire bats display a high amount of cooperative behavior.