Eyeing up the collaboration
Nov 2nd 2006
From The Economist print edition
The whites of the eyes suggest early humans were co-operative
THE sight of a group of men standing round watching another man work on his car is familiar in cultures throughout the world. It is also an example of what seems to be a primal human interaction—the mutual direction of gaze. Indeed, being able to identify what someone else is looking at is thought to have been so important to humans that people evolved to have eyes surrounded by brilliant whites to assist with the process. Now new research from Germany backs up the idea.