However, they also reasoned that it could instead lead people to become more aware of others' needs and drive cooperativebehavior as a result.
然而，他们也认为，这反而会使人们更加了解他人的需求，推动合作。
2
I suspect that motivation plays a role in many aspects of cognition, not just in cooperativebehavior, but also in social learning, in communication.
我猜想动机在认知能力的多个方面都发挥了一定的作用，不仅仅是合作行为，也包括社会学习和信息交流。
3
Natural selection, which usually promotes only selfish behavior, can reward this kind of cooperativebehavior, called kin selection, because relatives contain many of the same genes.