includes references and index.

A framework for thinking about sex differences.-- Sex differences in personality.-- Six difference in neurocognitive functioning.-- Sex differences in educational and vocational choices.-- A framework for thinking about race differences.-- Evolution since humans left Africa.-- The landscape of ancestral population differences.-- A framework for thinking about heritability and class.-- The ubiquity of heritability and the small role of the shared environment.-- Abilities, personality , and success.-- Constraints and potentials.-- The shape of revolution.-- Reflections and speculations.