This book is about post-Pleistocene adaptive change among the aboriginal cultures of the mountains and deserts of Arizona and New Mexico. Conceived essentially as a natural science alternative to the prevailing culture history paradigm, it offers both a general theoretical framework for interpreting the archaeological record of the American South-West and a persuasive evolutionary model for the shift from a hunter-gatherer economy to horticulture at the Mogollon/Anasazi interface. Technical, architectural and settlement adaptations are examined and the rise of matrilineality, ethnic groupings...