The second section includes chapters on personality and cognitive abilities, genetics of mental retardation, reading and language disorders, and childhood disorders. The third section covers personality disorders, affective disorders, schizophrenia, substance misuse, anxiety and eating disorders, and the dementias. Detailed coverage is provided of the major psychiatric syndromes in adult life, with explanations offered for both quantitative and molecular findings. The latest research is discussed and critically reevaluated, and current findings are compared with more traditional methods for a fair and accurate assessment of both systems.