sociobiology

noun

Etymology: From socio- + biology, popularized by E. O. Wilson's Sociobiology: The New Synthesis (1975).

1. The science that applies the principles of evolutionary biology to the study of social behaviour in both humans and animals.

   “Sociobiology forms a unifying theory of the social interactions in the human and in the animal world. Its principle unifying human and animal societies is the maximisation of genetic fitness by the individual.”