ISBN-13: 9780198522652 / Angielski / Miękka / 1995 / 280 str.
This text describes how human ancestors reached the point in cognitive evolution from which the evolution of modern humans was possible. Rather than speculating about the mental abilities of fossil hominids, on the basis of modern human psychology, the author explores earlier phases of evolution, with the more solid and testable evidence of human ancestry that is still alive: modern primates and other animals.