This text is about the frontal lobes - one of the most important and rapidly evolving topics in contemporary neuroscience and neuropsychology. The author shows how the frontal lobes, this most human part of the brain, enable us to engage in complex mental processes, how the frontal lobes control our judgment, and our social and ethical behaviour. The book also shows how vulnerable the frontal lobes are to injury and how devastating the effects of frontal-lobe damage often are, leading to chaotic, disorganized, asocial and even criminal behaviour.