Biological and cultural diversity: the legacy of Darwin for development.

To explain becoming human, becoming a member of a culture and society, and becoming a unique human being calls upon diverse theoretical resources in the biological and social sciences. To integrate such diverse concepts requires the umbrella of evolutionary theory, which alone can encompass so many levels of analysis. I present an elaboration of the theory sketched in my presidential address to SRCD in the hope that a more thorough understanding of the theoretical framework and the implications of cultural and biological diversity will enrich and enliven developmental research. Debates with colleagues of different persuasions are always welcome and often fruitful.