Full Citation: Kelly, D. (2013). ‘Moral Disgust and The Tribal Instincts Hypothesis,' Cooperation and Its Evolution, Eds. K. Sterelny, R. Joyce, Calcott, B, & B. Fraser. Cambridge, MA: The MIT Press, pages 503-524. http://www.amazon.com/Cooperation-Evolution-Life-Mind-Philosophical/dp/0262018535 Moral Disgust and Tribal Instincts: A Byproduct Hypothesis By Daniel R. Kelly Department of Philosop...