A person wielding a gun focuses more intently on the face of an opponent with a gun, presumably to try to determine that person's likelihood of pulling the trigger, according to a new study that builds on gun-in-hand research from the University of Notre Dame.
Fuente : http://www.eurekalert.org/pub_releases/2013-10/uon...
Fuente : http://www.eurekalert.org/pub_releases/2013-10/uon...