Get access

Brain Sex—Testosterone Role in Personality Evolution; Females and Males Are Different?


  • Aksam A. Yassin MD, PhD, EdD, FEBU

    1. Professor of Urology & Human Sexuality
      Clinic of Urology/Andrology, Segeberger Kliniken, Norderstedt-Hamburg / Germany and Department of Urology, Gulf Medical College School of Medicine, Ajman, UAE
    Search for more papers by this author


The genders are different because their brains are different. The brain is differently constructed in men and in women; it processes information in a different way, which results in different perceptions, priorities and behaviour. Men and women are equal only in their common membership to the same species, humankind.

The influence of testosterone on the prenatal brain is producing differences in personalities and social behaviours of this humankind.

The extraordinary journey from the sexual differentiation from the prenatal brain to the gender differences inherent in kindergarten play styles, classroom abilities and adult attitudes towards love, sex and marriage and social life in general have been analysed within the last 20 years.