Harold Dibble is the Francis E. Johnston Professor of Anthropology at the University of Pennsylvania. Dibble received his B.A. in 1971 and Ph.D. in 1981, both from the University of Arizona. He has directed excavations at a number of sites in France, Egypt, and Morocco, and is Director of the Laboratory for the Study of Ancient Technology, which focuses on experiments in stone tool production. He has authored or edited 17 books and 180 research articles dealing primarily with stone tool technology of the Old Stone Age and especially Neandertal behavior.