Chimpanzee material culture : what are its limits and why? / W.C. McGrew -- How useful is the culture concept in early hominid studies? / R.A. Foley -- The significance of modern hunter-gatherers in the study of early hominid behaviour / Francis B. Musonda -- Archaeological evidence for modern intelligence / Thomas Wynn -- The invention of computationally plausible knowledge systems in the Upper Palaeolithic / Sheldon Klein -- An interactive growth model applied to the expansion of Upper Palaeolithic populations / Ezra B.W. Zubrow -- Aboriginal fossil hominids : evolution and migrations / Phillip J. Habgood.