Common bias known as the 'endowment effect' not present in hunter-gatherer societies

Psychology and behavioral economics have experimentally identified a laundry list of common biases that cause people to act against their own apparent interests. One of these biases -- the mere fact of possessing something raises its value to its owner -- is known as the "endowment effect." A new interdisciplinary study from the University of Pennsylvania has delved into whether this bias is truly universal, and whether it might have been present in humanity's evolutionary past.

Fuente : http://www.eurekalert.org/pub_releases/2013-10/uop...