- DO PEOPLE CARE OF HIS/HER PARTNER'S WHEREABOUT? (in the context of a collaborative and mobile activity)- Which representation do collaborative partners build of their partner's cognitive state (mutual modeling) and of the group interactions (group modeling) + transactive memory - To which extent do the team-mates remenber interactions episodes and their relationship to mutual/group modeling? - Do location awareness tools leads to build more accurate mutual and group models? - Which kind of spatial information is used for mutual/group modeling? which are relevant/effective?