Until recently, little account has been taken of sex differences in many research studies in psychiatry, medicine and physiology. Subjects of these research studies were mainly men, with most researchers using twice as many males as females in their studies. The need to take a sexually differentiated approach has led to the work described in this book, concerning detailed investigations into the correlations between functional asymmetry of the brain and sex. Sex Differences in Lateralization in the Animal Brain is the first monograph summarizing the sexual specificity of functional lateralization of the brain in animals and humans. It is based on original experimental data from animals and will be of interest to biologists, psychologists and neurobiologists.