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The concept of a behavioral immune system is seen by evolutionary psychologists such as Mark Schaller and L A Duncan as a coherent set of adaptations, responses and behaviors that have been shaped by evolutionary forces to help protect higher organisms from bacteria, viruses, parasitic disorders and infections. This system is seen to complement the biological immune system


Physical attractiveness and mate selection

Stigmatization and prejudice

See also


  • Schaller, M & Ducna, L.A. (2007).The behavioral immune system: Its evolution and social psychological implications. In J.P. Forgas, M.G. Haselton & W von Hippel (eds) Evolution and the social : Evolutionary psychology and social cognition (pp293-307) New York. Psychology Press.