Paolini, Stefania, Miles Hewstone, Mark Rubin, and Helen Pay. 2004. “Increased Group Dispersion After Exposure to One Deviant Group Member: Testing Hamburger’s Model of Member-to-Group Generalization”. Journal of Experimental Social Psychology 40: 569-85. Referenced from figshare.com: Increased group dispersion after exposure to one deviant group member: Testing Hamburger’s model of member-to-group generalization.