 Sociobiology is a field of biology that aims to examine and explain social behavior in terms of evolution. It draws from disciplines including ethology, anthropology, evolution, zoology, archaeology, and population genetics. Within the study of human societies, sociobiology is closely allied to Darwinian anthropology, human behavioral ecology and evolutionary psychology. Sociobiology investigates social behavior such as mating patterns, territorial fights, pack hunting, and the hide society of social insects. It argues that just as selection pressure led to animals evolving useful ways of interacting with a natural environment, so also it led to the genetic evolution of advantageous social behavior. While the term sociobiology originated at least as early as the 1940s, the concept did not gain major recognition until the publication of Edo Wilson's book Sociobiology, the new synthesis in 1975. The new field quickly became the subject of controversy. Critics, led by Richard Walton and Stephen J. Groll, argued that genes played a role in human behavior, but that traits such as aggressiveness could be explained by social environment rather than by biology. Sociobiologists responded by pointing to the complex relationship between nature and nurture.