In the 1970s and 1980s university departments began to include the term "evolutionary biology" in their titles. The modern era of evolutionary psychology was ushered in, in particular, by Donald Symons' 1979 book "The Evolution of Human Sexuality" and Leda Cosmides and John Tooby's 1992 book "The Adapted Mind". David Buller observed that the term "evolutionary psychology" is sometimes seen as denoting research based on the specific methodological and theoretical commitments of certain researchers from the Santa Barbara school (University of California), thus some evolutionary psychologists prefer to term their work "human ecology", "human behavioural ecology" or "evolutionary anthropology" instead.