Male Brains, Female Brains and Justice Kavanaugh


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Like the rest of America, I was riveted by the confirmation hearings for Brett Kavanaugh. The differences in the demeanor between Judge Kavanaugh and Christine Blasey Ford was striking. Underlying those differences are gender-based traits that have far-reaching implications for advisors.

She was humble, deferential and calm. He was highly assertive, angry and, at times, openly confrontational with those questioning him.

The book, Brain Rules, by John Medina, is helpful in understanding the difference in their conduct.

Medina has stellar credentials. He is a developmental molecular biologist and research consultant, and an affiliate professor of bioengineering at the University of Washington School of Medicine. He was the founding director of two brain institutes.

His findings have broad ramifications for investment advisors.

Brain differences

Medina sets forth these differences in the brains of men and women:

  • Women have two X chromosomes (one of which acts as a back-up). Men have one. X chromosomes are “cognitive hot spots.”
  • Women are “genetically more complex”.
  • The brains of men and women are different “structurally and biochemically,” but the significance of those differences is unknown.