Gifted Brain and Twinning: Integrative Review of the Recent Literature

In this review, on the base of the literature data on the strong connection between high intelligence in pre/adolescents and high testosterone level in the prenatal fetus development and also on the increased concentration of testosterone in the amniotic liquid in the case of monozygotic male-twins pregnancy, the hypothesis of biologically conditioned intellectual giftedness in the monozygotic male-twins is suggested. Taking into consideration new experimental own data and results of other investigators it is assumed that the high involvement of the right frontal cortical area in the ongoing information brain processing may serve as a physiological marker of intellectual giftedness. The prenatal developmental peculiarities and unfavorable psychosocial factors during postnatal twins’ development are discussed as the reasons for the phenomenological absence of talented male-twins in human history.