Evolutionary developmental psychology is the study of the genetic and ecolo
gical mechanisms that govern the development of social and cognitive compet
encies common to all human beings and the epigenetic (gene-environment inte
ractions) processes that adapt these competencies to local conditions. The
basic assumptions and domains of this emerging field, as related to human l
ife history and social and cognitive development, are outlined, as are impl
ications for issues of importance in contemporary society.