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Somewhere around 15% to 20% of children, with the boys outnumbering the girls, are sufficiently hyperactive, noisome, and aggressive in their behavior that they disrupt their classrooms, exhaust their mothers, prove the fragility of modern toys, and generally bother their peers and their elders. Although they have normal range IQ tests, they book-learn below the expected rate and many of them fidget so consistently as to be diagnosed as having chorea. Whether the problem lies in the evolution of society, which confines these children to closed quarters and a fixed education, or with the child's brain, or with social-environmental factors is far from clear, according to this monograph. The book contains excellent, factfilled chapters by Omenn (genetics) and Satterfield (electroencephalography), and those two contain most of the useful facts available in the literature. A chapter by Windle on asphyxial neuropathology seems largely irrelevant, and one by Needleman on lead