Book excerpt: Now in a revised and expanded second edition, this authoritative work synthesizes the rapidly growing knowledge base on the human frontal lobes and their central role in behavior, cognition, health, and disease. Leading contributors address neuroanatomy, neurochemistry, and normal neuropsychological functioning, and describe the nature and consequences of frontal lobe dysfunction in specific neurological and psychiatric conditions. Second edition features include a new section on structural and functional neuroimaging and substantially expanded coverage of frontotemporal dementia and related disorders. Other new topics include self-consciousness, competence, and personality; new testing approaches; bipolar disorder; and adult-onset genetic disorders of the frontal lobes. The book is illustrated with nearly 100 figures.