Neuropsychological aspects of neuropsychiatric diseases that are common in old age or that present problems for diagnosis and treatment especially in the old patient represent the objective of this book. There are several good reasons for addressing this topic. Disorders of brain function become more frequent in old age and neuropsychology thus gains importance in geriatric medical evaluation and in distinguishing the many dimensions of neuropsychological deviations from “normal senescence.” Research in this area has recently intensified and valuable insights have accumulated; however, few books on this topic are currently available. The Handbook of Neuropsychology and Aging focuses on neuropsychological aspects; specifically, on geriatric psychiatry and neurology. Here, the editor has attempted to bring together outstanding researchers to cover the entire field of geriatric neuropsychiatry.