Masculinity and femininity remain among the more confounding constructs in the history of personality psychology and psychological assessment. In spite of years of research and thousands of empirical studies, masculinity and femininity are still so fraught with confusion and political controversy that several prominent psychologists have suggested that the terms be abandoned. In this informative book, Hale Martin and Stephen E. Finn bring clarity to this topic by comprehensively reviewing past research and theory and extensively exploring "masculinity" and "femininity" as they are measured in the widely used MMPI instruments.