Early infanticidal childrearing is a term used in the study of psychohistory that refers to infanticide in paleolithic, pre-historical, and historical hunter-gatherer tribes or societies. "Early" means early in history or in the cultural development of a society, not to the age of the child. "Infanticidal" refers to the high incidence of infants killed when compared to modern nations. The model was developed by Lloyd deMause within the framework of psychohistory as part of a seven-stage sequence of childrearing modes that describe the development attitudes towards children in human cultures The word "early" distinguishes the term from late infanticidal childrearing, identified by deMause in the more established, agricultural cultures up to the ancient world.

Psychohistory is an amalgam of psychology, history, and related social sciences and the humanities. Its proponents claim to examine the "why" of history, especially the difference between stated intention and actual behavior. It works to combine the insights of psychology, especially psychoanalysis, with the research methodology of the social sciences and humanities to understand the emotional origin of the behavior of individuals, groups and nations, past and present. Work in the field has been done in the areas of childhood, creativity, dreams, family dynamics, overcoming adversity, personality, political and presidential psychobiography. There are major psychohistorical studies of anthropology, art, ethnology, history, politics and political science, and much else.