The Male Brain

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Summary of Content In her novel The Male Brain, Louann Brizendine challenges the wide belief that men are emotionless creatures who walk around only thinking of sex, power and status. Rather she aims to show that in fact men are great problem solvers who show great amounts of emotion just in very different manners than females. Until more recent times, men had been the standard for conducting major scientific research. This is because scientists thought that a woman’s menstrual cycle would corrupt the data. However this is a false statement and there is much to be learned from studying about male and female brains since there is vastly different activities occurring in each. One seemingly small difference in males and females structures is the appearance of the Y chromosome in males that females do not posses. This “small but significance difference begins to play out early in the brain as genes set the stage for later amplification by hormones” (Brizendine, 2-3). Louann studies the development and different brain circuits that change in the male brain in her book during many stages of a man’s life. The first stage of the male brain is what Louann calls “The Boy Brain”. From the point of conception there are noticeable distinctions between male and female brains. From an early age “The genes that turn on will trigger the urge to track and chase moving objects, hit targets, test his own strength, and play at fighting off enemies” (Brizendine, 10). It is a biological impulse for boys to be action-oriented. Two hormones dominate a boy’s fetal development, testosterone and MIS or Müllerian inhibiting substance. During pregnancy these hormones form brain circuits in the male brain that suppress female-type behaviors and form male-type behaviors, like being action-oriented. The period up until the boy’s first year of life is called infantile-puberty, where
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