Google the phrase “differences between men and women” and you will get close to 572 million results. It’s a topic that is as old as time, but Louann Brizendine’s Female Brain focuses these differences squarely on our brains. From birth, “boy-behavior” and “girl-behavior” is hardwired into the brain, thus making us much more predictable than we think.
The Female Brain was written in 2007 during the rising tide of behavioral and neuroscientific research, and is a fascinating read for anyone interested in better understanding some of the whys behind female and male behavior. In the following write up, I will unpack some of the gender specific behavioral differences that are driven by the “simple” biological differences between the female and male brain.
Blame it on Testosterone, Estrogen, and Progesterone
As Louann Brizendine details in the Female Brain, there are no neutral unisex brains. Hormones make our brains uniquely female and male. The specific three hormones that drive most of the brain differences between the sexes are: (1) Testosterone (2) Estrogen (3) Progesterone. The deeper science between these three hormones aren’t relevant for this post but what is relevant is the specific role each of these hormones plays in the development of the female and male brain.
The rising tides of estrogen and progesterone assure that all female-specific brain circuits become more sensitive to emotional nuance such as approval or disapproval and acceptance or rejection. Female brains are programmed to prioritize connecting, bonding and keeping the peace. In direct contrast, testosterone has been shown to decrease the communication-specific brain circuits in the male brain, often leading men to seek out conflict and decreased socialization. Literally, the differences in the sexes come down to the hormone levels in females and males which determine the parts of our brains that are primed for different types of behaviors.
The Female and Male Brains
Over the millions of years that humans have walked on this Earth, female and male brains have evolved along some of the following lines:
The amygdala is the brain’s center for fear, anger, and aggression and it’s physically larger in men.
The prefrontal cortex is the brain’s center for planning, decision-making, problem solving, and self-control and it’s relatively larger in women.
Most neural connections in the male brain run between the front and back parts of the same brain hemisphere, which accounts for the better spatial skills and motor (muscle) control in men
Many more neural connections go from side to side across the left and right hemispheres of the female brain. This accounts for women’s better verbal skills and intuitive abilities.
The male brain has larger centers for aggression and action and is wired for pursuits that require solitary work. The male brain is finely tuned to sense threats, connect through sex, react quickly, and respond directly to spoken cues of others.
The female brain has larger centers for nurturing, communicating and forming social bonds, and is wired for pursuits that require interaction with others. The female brain is finely tuned to read faces, hear emotion in tones of voice, and respond to unspoken cues of others.
In Closing It’s not that men and women are from two different planets as John Gray wrote in 1992. It’s more simply that women and men have different brain realities caused by differences in testosterone, estrogen, and progesterone. These hormonal differences give women the edge when it comes to connecting emotionally, observing fully, and communicating effectively, and thus are ultimately better at sustaining deeper relationships with others. So the next time you have a communication disagreement with someone of the other sex or have a challenging time understanding their point of view, remember to give yourself a bit of grace because “boy-behaviors” and “girl-behaviors” are simply hardwired into our brains at birth.
