Another ability, joint attention, is related to social referencing. Both theory of mind and pretense require a certain degree of interacting and communicating with others. Joint attention includes the ability to follow another individual's referential pointing, eye gaze, or view point. When children participate in pretend play with other individuals they are required to share the same pretend presuppositions of the object and situation as the other individual. For example, when pretending to take a road trip, both children are expected to know that the chairs they sit on represent car seats. Children show more instances of joint attention in pretend play than they do in other non-symbolic play activities.