Sociobiology, with its focus on biological accounts of evident social facts, has developed into evolutionary psychology, with its stress on the process of the evolution of the brain, and the extent of influence of people’s desire to survive and to multiply their genes into the next generations to their present behavior and conduct (ibid).Sociobiology or evolutionary psychology both in the modern age apply scientific methods of investigation, and subject raw data to quantitative analysis. Any science makes use of speculations, theory, and others. However, these are applied in the service of an empirical framework, and the aged criticisms are nowadays primarily incorrect. The concept of evolution is the adhesive in biology. Carrying this concept into psychology has offered countless new ideas and insights (ibid). Evolutionary psychology is one of the most essential new assumptions of the contemporary times, making use of Darwin’s ideas on evolution and natural selection to the psychological study of humans.There has been, as people think, a paradigm shift in psychology, such that several phenomena clarified in terms of social causation, or impossible to explain at all, are now clarified in the evolutionary psychology discipline. Hence, evolutionary, biological clarifications have turned out to be more often in psychology, while explanations in terms of social psychology, education, or culture have turned out to be observed as less practical (Mortola, 1999). Genes and the environment function together, hence these other regions are not declined, and they merely are not applied as much anymore as the foremost explanation of phenomena. Using the concept of human sexuality, this paper will show how the innovated evolutionary psychology explains significant ideas nowadays which are previously not available (ibid).Evolutionary psychology has been particularly valuable in the discipline of human sexuality, where people’s understanding lingers behind thesignificance of a discipline that influences all of humanity.