Bookmarklets | MOVABLE TYPE Spatial Coordination could be measured with its outcome : a success correspond to the fact that participants among a group could stay out of sight for long periods and can link up again as soon as they wish.
Variables to take into account : - group dispersion (distance between the participants) - topology/environment setting - other persons (from empty space to crowd)
I should check the literature about video games level design to have a state-of-the-art view of this topic.