Evolutionary approaches in archaeology

Two evolutionary approaches in contemporary archaeology, selectionism and processualism, are compared in terms of their theoretical perspectives, methodologies, and empirical contributions. Selectionism is a tightly focused approach that aims to apply a strict Darwinian framework to the study of cultural evolution. The selectionists view cultural evolution as a shift in the relative frequencies of cultural traits; the evolutionary mechanism that brings this about entails undirected variation followed by selection in a manner analogous to biological evolution. Processualism is a more flexible approach that acknowledges the importance of variation and selection but employs these concepts in a broader framework that recognizes fundamental differences between cultural and biological evolution. Among them are the central roles played by directed variation and the hierarchical operation of selection in cultural evolution. As we enter the late 1990s, the selectionists appear comfortably ascendant while the processualists often seem in disarray—they appear less confident, more embattled, more internally diverse. This diversity and dynamism, however, may harbor great potential for further growth and development. It is suggested that processualism's ongoing ferment will spawn the evolutionary archaeology of the future.