We question the plausibility of Fincher and Thornhill's argument that localised pathogen-host coevolution leads to out-groups having pathogens more damaging than those infecting one's own family or religious group.
De Barra, M.; Curtis, V. Are the pathogens of out-groups really more dangerous? Behavioral and Brain Sciences (2012) 35 (02) 85-86. [DOI: 10.1017/S0140525X11000975]
Are the pathogens of out-groups really more dangerous?