Evolutionary Approaches to Creativity

Abstract: Many species engage in acts that could be called creative. However, human creativity is unique in that it has transformed our planet. Given that the anatomy of the human brain is not so different from that of the great apes, what enables us to be so creative? Recent collaborations at the frontier of anthropology, archaeology, psychology, and cognitive science are culminating in speculative but increasingly sophisticated efforts to answer to this question. Examining the skeletons of our ancestors gives cues as to anatomical constraints that hindered or made possible various kinds of creative expression. Relics of the past have much to tell us about the thoughts, beliefs, and creative abilities of the people who invented and used them. How the spectacular creativity of humans came about is the first topic addressed in this chapter. Studies at the intersection of creativity and evolution are not limited to investigations into the biological evolution of a highly creative species. Creative ideas themselves might be said to evolve through culture. Human creativity is distinctive because of the adaptive and open-ended manner in which change accumulates. Inventions build on previous ones in ways that enhance their utility or aesthetic appeal, or make them applicable in different situations. There is no a priori limit to how a creative idea might unfold. It is this proclivity to take an idea and make it our own, or 'put our own spin on it', that makes creative ideas evolve. The next section of this chapter investigates in what sense creative ideas evolve through culture. Finally, we address what forces supported the evolution of creativity. Does being creative help us live longer, or attract mates? Perhaps creative projects can sometimes interfere with survival and reproductive fitness; are there non-biological factors that compel us to create? This is a third topic addressed in this chapter.