It means you choose weather to listen or not when you choose to actively listen it means you show that you have a want to listen is where the attitude comes in
In a cooperative learning model, everyone succeeds only when the group succeeds. This way, the learners help one another to achieve understanding by positive interdependence.
In other words, since success depends on the participation of all the members, they would ask one another for information, evaluate one another's ideas, and monitor one another's work, thus help one another to achieve understanding.