This is the third of a four part series on how the modern age changed the way we receive and process information. Today, we look at differences between how the right and left hemispheres of the brain affect our perspectives, and whether or not any part of that process is related to gender.

During the modern age, left brain functioning was more respected and rewarded than right brain functioning. René Descartes, one of the most influential voices in the development of the modern age, saw the rational mind as the apex of human development. Francis Bacon thought the rational mind could set us free from the need for God. Isaac Newton saw a rational God who created the world as a machine that could be taken apart and put back together again. Scottish philosopher John Locke, a leading voice of the Enlightenment, guided the thinking of many a 19th century theologian as they turned the Bible from a historical narrative into a rational collection of rules and regulations.

Even today, as the modern age fades and postmodernism gains influence, we still see the triumph of the left brain throughout society, including elevating the scions of Silicon Valley, like Elon Musk and Bill Gates, over the theologians, philosophers, and artists who would have been held on a pedestal in a previous age.

One of the most obvious ways in which the modern age and its left brain focus still triumphs is in the amount of attention public education places on math and science at the expense of art, music, and social studies. Public education continues to be a left-brain dominated field.

Unless your folks raised you in a left-leaning commune on the coast of California, you were most likely raised in a world that valued the left brain over the right, which caused you to see information in parts rather than wholes. It caused you to prefer literal meaning over metaphor, objective truth over inter-subjective exploration, fact over feeling, analysis of isolated parts over integration into holistic contexts, scientific explanations over awe, certainty over mystery. What you know is far more important than what you experience. I could go on. Okay, I will…

Your education focused on the subjugation of nature over the otherness of nature; the rational consistency of God over the mystery of God; the logical judgment of God over the irrational love of God; didactic teaching over narrative (which is the opposite of the teaching style of Jesus.) Your world focused on the emissary left hemisphere over the primary right hemisphere; the later developing left hemisphere over the early developing right hemisphere; Freud over Jung. Okay, I’ve probably lost everyone except the psychodynamic therapists with that last one.

While there are unquestionably differences between how the two hemispheres of the brain function, what about differences in the way male and female brains function? We know there are physiological differences between male and female brains, but what about brain functioning?

In Nature Reviews Neuroscience an article titled, Why Sex Matters for Neuroscience, an article was published on May 10, 2006 showing significant differences between male and female functioning brains. Larry Cahill noted that the unstated assumption has been that male and female brains are identical except for fluctuating sex hormone influences and a larger hippocampus in women than in men. He noted those differences are far more significant than previously thought, including showing that the left amygdala was more involved in memory of emotional material for women, particularly visual images, while the right amygdala was more active in memory for men.

An article by Alga Khazan in The Atlantic on December 20, 2013, Male and Female Brains Really Are Built Differently, referred to a study by Ragini Verma and others at the University of Pennsylvania involving 949 people ages 8 to 22. The male brains had more connections within each hemisphere while female brains had more interconnections between hemispheres. The brain’s fiber pathways, bundles of axons that act as highways routing information from one part of the brain to the other, ran back and forth within hemispheres for men, while in women they tended to zig-zag between left and right.

The article also quoted a study in November of 2013 at the University of Glasgow which found women have an edge when it comes to switching between tasks rapidly based on functioning between hemispheres. Another showed the hemispheres of women’s brains are more functionally interconnected when at rest than men’s.

A study published in April of 2012 by Dardo Tomasi and Nora D Volkow in Human Brain Mapping showed significant differences in the functional organization of the brain in 336 women and 225 men.

While all of these studies indicated differences between the sexes in brain functioning, a study reaching a widely different conclusion was  published by Rosalind Franklin University of Medicine and Science on March 29, 2021. It showed only about a one percent difference between the sexes in how brains function within and between hemispheres.

Regarding differences between the sexes in brain functioning, it is wise to heed the words of Anke Ehrhardt, a psychiatry professor at Columbia, who said in the 2013 Atlantic article, “Acknowledging brain effects by gender does not mean these are immutable, permanent determinants of behavior, but rather they may play a part within a multitude of factors and certainly can be shaped by social and environmental influences.”

Next week we end this four-part series by looking at how religion has been shaped by left brain/right brain thinking.