Asserts that the contemporary behavior and behavior-potential of the species Homo sapiens is a function in an as yet unspecified way of interactions over the millennia between humankind's
biological state and
experience. The phylogenetic perspective is often symbolized by the quasi-mathematical formula B
h=
f(
BxE), where
Bhis the behavior potential of humans,
f is "a function of,"
B is biological state, and
E is experience. The product symbol (x) conveys the idea of an interaction between elements within the parentheses. In effect, this perspective recognizes an almost inextricable interaction between nature and nurture.