Are There Differences between the Brains of Males and Females?

Differences between the human male brain vs female brain have historicallyserved to emphasize women’s subservient role in society. That men and women are different, everyone knows that.

However, aside from external anatomical, primary, and secondary sexual differences, scientists know also that there are many other subtle differences of how men and women process language, information, emotion, cognition, etc.

One of the most interesting differences appear in the way men and women estimate time, judge speed of things, carry out mental mathematical calculations, orient in space and visualize objects in three dimensions, etc. In all these tasks, women and men are strikingly different, as they are too in the way their brains process language. This may account, scientists say, for the fact that there are many more male mathematicians, airplane pilots, bush guides, mechanical engineers, architects and racecar drivers than female ones.

On the other hand, women are better than men in human relations, recognizing emotional overtones in others and in language, emotional and artistic expressiveness, esthetic appreciation, verbal language and carrying out detailed and pre-planned tasks. For example, women generally can recall lists of words or paragraphs of text better than men can.

The "father" of sociobiology, Edward O. Wilson, of Harvard University, said that human females tend to be higher than males in empathy, verbal skills, and social skills and security seeking, among other things, while men tend to be higher in independence, dominance, spatial and mathematical skills, rank-related aggression, and other characteristics.

When all these investigations began, scientists were skeptical about the role of genes and of biological differences, because cultural learning is very powerful and influential among humans. Are girls more prone to play with dolls and cooperate among themselves than boys, because they are taught to be so by parents, teachers and social peers, or is it the reverse order?

It is no secret that boys and girls are different— very different. The differences between genders, however, extend beyond what the eye can see. Research reveals major distinguishers between male and female brains.

Scientists generally study four primary areas of difference in male and female brains: processing, chemistry, structure, and activity. The differences between male and female brains in these areas show up all over the world, but scientists also have discovered exceptions to every so-called gender rule. You may know some boys who are very sensitive, immensely talkative about feelings, and just generally do not seem to fit the “boy” way of doing things. As with all gender differences, no one-way of doing things is better or worse. The differences listed below are simply generalized differences in typical brain functioning, and it is important to remember that all differences have advantages and disadvantages.

Processing

Male brains utilize nearly seven times more gray matter for activity while female brains utilize nearly ten times more white matter. What does this mean?

Gray matter areas of the brain are localized. They are information- and action-processing centers in specific splotches in a specific area of the brain. This can translate to a kind of tunnel vision when they are doing something. Once they are deeply engaged in a task or game, they may not demonstrate much sensitivity to other people or their surroundings.

White matter is the networking grid that connects the brain’s gray matter and other processing centers with one another. This profound brain-processing difference is probably one reason you may have noticed that girls tend to more quickly transition between tasks than boys do. The gray-white matter difference may explain why, in adulthood, females are great multi-takers, while men excel in highly task-focused projects.

Chemistry

Male and female brains process the same neurochemicals but to different degrees and through gender-specific body-brain connections. Some dominant neurochemicals are serotonin, which, among other things, helps us sit still; testosterone, our sex and aggression chemical; estrogen, a female growth and reproductive chemical; and oxytocin, a bonding-relationship chemical.

In part, because of differences in processing these chemicals, males on average tend to be less inclined to sit still for as long as females and tend to be more physically impulsive and aggressive. Additionally, males process less of the bonding chemical oxytocin than females. Overall, a major takeaway of chemistry differences is to realize that our boys at times need different strategies for stress release than our girls.

Structural Differences

A number of structural elements in the human brain differ between males and females. “Structural” refers to actual parts of the brain and the way they are built, including their size and/or mass.

Females often have a larger hippocampus, our human memory center. Females also often have a higher density of neural connections into the hippocampus. As a result, girls and women tend to input or absorb more sensorial and emotive information than males do. By “sensorial”, we mean information to and from all five senses. If you note your observations over the next months of boys and girls and women and men, you will find that females tend to sense a lot more of what is going on around them throughout the day, and they retain that sensorial information more than men do.

Additionally, before boys or girls are born, their brains developed with different hemispheric divisions of labor. The right and left hemispheres of the male and female brains are not set up exactly the same way. For instance, females tend to have verbal centers on both sides of the brain, while males tend to have verbal centers on only the left hemisphere. This is a significant difference. Girls tend to use more words when discussing or describing incidence, story, person, object, feeling, or place. Males not only have fewer verbal centers in general but also, often, have less connectivity between their word centers and their memories or feelings. When it comes to discussing feelings and emotions and senses together, girls tend to have an advantage, and they tend to have more interest in talking about these things.