ABSTRACT
My goal in this chapter is to offer a way of thinking about the process of developmental change that accords to culture a co-equal status in the traditional tug of war between phylogeny and ontogeny. In this view, culture mediates the interaction of the traditional biological and environmental factors, thereby putting a "third term" into the dialectic of phylogeny and ontogeny. The cultural mediational forces of development refract the emergent life forms through a kalaidoscopic prism representing culturally—historically accumulated systems of meaning—action— activity.
