Abstract

The global dispersal of prehistoric ancient humans from Africa to North America, and the existence of artistic innovation evidenced in the Late Pleistocene are, by now, parts of a familiar and fascinating story. But the explanation of how our human career was possible cries out for clarification. In this chapter, I argue that dual process theory can provide the needed explanation. My claim will be that the advent of System-2 reasoning running offline, aided by executive cognitive control and language, and facilitated by neural plasticity, made possible the remarkable human dispersal from Africa to North America by way of the Middle East and Asia. System-1 modular adaptations, together with System-2 reasoning, gave rise to the flexible, culturally-informed, mental operations that were essential to shape the psychologically modern mind. The result was, inter alia, the surprising Late Pleistocene dispersal of ancient humans to North America.