Screening for genetic diseases is performed in many regions and/or ethnic groups where there is a high prevalence of possibly malign genes. The propagation of such genes can be considered dynamic externality. Given that many of these diseases are untreatable and give rise to truly tragic...

Throughout history, epidemics have been a recurring terror to humanity. In vulnerable societies prior to the development of modern medicine an epidemic could wipe out 50-60% of a population. With the possible exception of AIDS, modern epidemics are less devastating to affected communities, but...

This paper explores how collective social norms can have individual-level genetic foundation. Our study is the first we know to report a plausible link between genetically founded individual preferences in a fraction of a population and social norms governing behavior of all individuals. As our...