This book is about the Diagnostic and Statistical Manual of Mental Disorders, more commonly known as the D.S.M. The D.S.M. is published by the American Psychiatric Association and aims to list and describe all mental disorders. Within its pages can be found diagnostic criteria for types of depression, types of schizophrenia, eating disorders, anxiety disorders, phobias, sleeping disorders, and so on. Also included are less familiar, and more controversial, conditions: Mathematics Disorder, Caffeine Intoxication, Nicotine Dependence, Nightmare Disorder. It must be admitted that the D.S.M. is...

Advances in fossil studies relating to the origin of Homo sapiens have strengthened the hypothesis that our direct ancestors originated on the African continent. Most researchers also agree that the time when prehumans diverged from the last common ancestor was in the early part of the Late Miocene epoch.

Focus must now shift from determining the times and places of hominid origins to clarifying hominid evolutionary problems, such as the selective factors and acquisition processes of hominid bipedalism. In March of 2003, researchers from Africa, Europe, Japan and the United States...