Alex B. answered 12/08/20
PhD in Anthropology with 25 years’ experience in college teaching.
A “strictly bio-centric approach” to understanding human nature doesn’t exist, but there does exist a cross-cutting paradigm that relies on biology, anthropology, and psychology to address the issues you’ve mentioned: Evolutionary Psychology (EP).
it’s important to note that EP is not a kind of psychology, but a focus on the mental structures and processes found in humans. A lot of early EP addressed sexual behavior, but it is certainly not just the science of sex.
Research is this paradigm relies on different approaches to disentangle the effects of culture/socialization from things like “instincts.” (You did refer to nature and nurture, and one EP practitioner likened the nature nurture difference to the difference between heat and ingredients in a loaf of baked bread: it’s not an either/or relationship.). At any rate, disentangling culture can be done by (1) studying infants, (2) studying non-human primates, and (3) studying humans with different cultures.
i would recommend an early EP tome, written to persuade, called *The Adapted Mind.*. If you can’t read the whole thing, do read the 100+ pages of the first chapter.