Evolutionary theory is one of the most wide-ranging and inspiring scientific ideas, and it offers a battery of methods that can be used to interpret human behaviour. However, researchers disagree about the best ways to use evolution to explore humanity, and a number of schools of thought have emerged. Sense and Nonsense, third edition, provides an introduction to the ideas, methods and findings of five such schools, namely sociobiology, human behavioural ecology, evolutionary psychology, cultural evolution and gene-culture coevolution. In this revised and updated edition of their successful monograph, Brown and Lala provide a balanced and rigorous analysis that scrutinises both the evolutionary arguments and the allegations of the critics, carefully guiding the reader through the mire of confusing terminology, claim, and counter-claim, and polemical statements. This readable and informative introductory book will be of use to undergraduate and postgraduate students (for example in psychology, anthropology and zoology), as well as experts on one approach who would like to know more about the other perspectives and lay-persons interested in evolutionary explanations of human behaviour. Having completed the book, the reader will feel better placed to assess the legitimacy of claims made about human behaviour under the name of evolution and to make judgements as to what is sense and what is nonsense. Understanding the evolutionary roots of the behavior of humans and other animals is one of the highest profile scientific projects of our times, with pitfalls and controversies in proportion to the scope of its aspirations. In this third edition of their classic volume, Brown and Lala provide us with a ringside seat to debates in this ever-evolving field, merging historical analysis with up-to-the-minute insights about the present and future of the discipline. Sense and Nonsense is the ultimate insider's guide to the history of one of our most ambitious attempts to understand ourselves and our place on the planet.