Beau said:
The question of gender and its meaning in today's world seems to be especially relevant with the political ramifications of the C-16 bill, which adds legal
protection for “gender identity” and “gender expression” to the Canadian Human Rights Act and the Criminal code. Legislation very similar to Bill C-16 has
already been passed in New York City. The biggest problem with these laws, as Jordan Peterson has been tirelessly working to point out, is the suppression and control of free speech that they create.
But political issues notwithstanding, there is still the question of how gender work in society and whether it is
a biological creation or a creation of society (or a little of both). There are plenty of arguments to be made on both sides. Some people say that it's a cultural creation of society and that depending on the society, you have a binary choice - male or female - while in other cultures you can have multiple genders. For a long time Western society used biology as the way to identify gender, although that is clearly changing with the SJW crowd now demanding more options and forcing the rest of society to comply. For me, using one's biological sex seems to be the simplest and most common sense way to go about understanding gender, but I am willing to hear others out who disagree. I also think there is a lot of confusion being sowed right now about this subject and it would be good to hear if others are feeling the same way or if they agree or disagree with the current transition in the West to accepting more than male or female as genders. Is gender the representation of biology, or as some argue is one's biological sex independent of gender identity and it's actually one's cultural milieu which determines gender?
Is gender a social construct?
To me, it sounds like a hypothetical question - much in line with, "What came first - the chicken or the egg?" My first reaction is that gender is a biological creation and that cultural and society were built around the roles of male and female? In physical and biological terms, so far, only the female can give natural birth and it follows down to the animal kingdom. The male does contribute half of the equation in producing offspring but physically, male body structure does not contain the attributes of a womb and biological chemistry to develop and deliver an offspring. Males do tend to be stronger, physically and have a higher ratio of endurance under pressure constructs. Females tend to be the weaker sex, yet is off set, by nurturing qualities and organizational skills.
There's also suggestions that males and females have different molecular brain chemistry?
Female and Male Brains Operate Differently at Molecular Level, New Study Reveals
http://www.sci-news.com/othersciences/neuroscience/science-female-male-brains-molecular-level-03125.html
A new study published in the Journal of Neuroscience has revealed an intrinsic biological difference between males and females in the molecular regulation of synapses in the hippocampus. This provides a reason to believe that female and male brains may respond differently to drugs targeting certain synaptic pathways.
Male brains have more connections within hemispheres to optimize motor skills, whereas female brains are more connected between hemispheres to combine analytical and intuitive thinking.
How Men's Brains Are Wired Differently than Women's
https://www.scientificamerican.com/article/how-mens-brains-are-wired-differently-than-women/
The research, which involved imaging the brains of nearly 1,000 adolescents, found that male brains had more connections within hemispheres, whereas female brains were more connected between hemispheres. The results, which apply to the population as a whole and not individuals,
suggest that male brains may be optimized for motor skills, and female brains may be optimized for combining analytical and intuitive thinking.
"On average, men connect front to back [parts of the brain] more strongly than women," whereas "women have stronger connections left to right," said study leader Ragini Verma, an associate professor of radiology at the University of Pennsylvania medical school.
But Verma cautioned against making sweeping generalizations about men and women based on the results.
Previous studies have found behavioral differences between men and women. For example, women may have better verbal memory and social cognition, whereas men may have better motor and spatial skills, on average. Brain imaging studies have shown that women have a higher percentage of gray matter, the computational tissue of the brain, while men have a higher percentage of white matter, the connective cables of the brain. But few studies have shown that men's and women's brains are connected differently.
In the study, researchers scanned the brains of 949 young people ages 8 to 22 (428 males and 521 females), using a form of magnetic resonance imaging (MRI) known as diffusion tensor imaging, which maps the diffusion of water molecules within brain tissue. The researchers analyzed the participants as a single group, and as three separate groups split up by age.
As a whole, the young men had stronger connections within cerebral hemispheres while the young women had stronger connections between hemispheres, the study, detailed today (Dec. 2) in the journal Proceedings of the National Academy of Sciences, found. However, the cerebellum, a part of the brain below the cerebrum that plays a role in coordinating muscle movement, showed the opposite pattern, with males having stronger connections between hemispheres.
Roughly speaking, the back of the brain handles perception and the front of the brain handles action; the left hemisphere of the brain is the seat of logical thinking, while the right side of the brain begets intuitive thinking. The findings lend support to the view that males may excel at motor skills, while women may be better at integrating analysis and intuitive thinking.
"It is fascinating that we can see
some of functional differences in men and women structurally," Verma told LiveScience. However, the results do not apply to individual men and women, she said.
"Every individual could have part of both men and women in them," she said, referring to the connectivity patterns her team observed.
When the researchers compared the young people by age group,
they saw the most pronounced brain differences among adolescents (13.4 to 17 years old), suggesting the sexes begin to diverge in the teen years. Males and females showed the greatest differences in inter-hemisphere brain connectivity during this time, with females having more connections between hemispheres primarily in the frontal lobe. These differences got smaller with age, with older females showing more widely distributed connections throughout the brain rather than just in the frontal lobe.
Currently, scientists can't quantify how much an individual has male- or female-like patterns of brain connectivity. Another lingering question is whether the structural differences result in differences in brain function, or whether differences in function result in structural changes.
A biologist remarks on the extraordinary similarity of male and female brains despite the persistence of binary behavioral styles
Is the Brain Gendered? A Q&A with Harvard's Catherine Dulac
https://blogs.scientificamerican.com/talking-back/is-the-brain-gendereda-q-a-with-harvard-s-catherine-dulac/
[...]
Can you tell me a little bit about your work of the last few years that relates to gender identification?
One characteristic of social behavior that is absolutely fundamental is that males and females in all animal species behave differently when they encounter a given social signal. So, for example, if one observes parental behavior, in many species females are spontaneously maternal: they will nurse and take care of infants, in contrast to males, which in most species are infanticidal, meaning they will just attack infants when they enter a social group that is not their own. In turn, males in many species become paternal once they sire their own offspring.
So why is that?
What underlies these sex differences in behavior? Do males and females detect various stimuli in different ways or do they detect the same stimulus but then have a different neural processing of social signals in the brain. To understand social behavior in mechanistic terms, it is absolutely essential to understand how different the male and female brains are. That question has occupied us a lot recently, and we came across some initial answers that are extremely interesting and surprising.
Indeed, it is assumed that the male and the female brains are very different because males and female behaviors differ so significantly. But over the last few decades, neuroscientists have been looking for major anatomical differences and did not find that many. Actually, they've found surprisingly few differences: more neurons or more neuronal spines here and there in one sex or the other, with great variations from one individual to the other but that’s about it.
So there is a paradox between this apparent similarity of the brains of males and females and the strikingly different behaviors they engage in.
We've been looking at this paradox and I think we've found some very intriguing ideas
—that there are few dedicated parts of the brain that are different between males and females, but most of the brain, including key areas engaged in the control of social behaviors, are likely to be very similar.
So, for example, we discovered a set of neurons in mice that control maternal behavior and these neurons are also found in male brains although males are not spontaneously paternal. However, if these neurons are specifically activated in males, they become as parental as mom can be.
Has there been any change in existing hypotheses about what gender is?
To a large extent yes. There was really an assumption that from birth animals, including humans, are already set in having neuronal circuits that are established as either male or female. As it turns out, we don’t think this is the case. We think that, to a large extent,
both males and females have both male-and-female neuronal circuits, but these circuits are regulated in a sex-specific way, which provides some important behavioral flexibility.
Our finding is not revolutionary in any way. Ethologists—people who were studying animal behaviors in the 1920s, 1930s and 1940s
—had observed that both males and females could occasionally display the behavior of the other sex. At that time they were obviously surprised. But then there followed a phase when things became more black and white—and it was thought that your brain is built as either male or female and all that is under the very early control of steroid hormones.
[...]
What are some of the overarching questions you'd still like to answer based on what you've found?
I would say that we've moved through a couple of steps,
but what lies ahead is really an understanding of how behavior is controlled in a mechanistic way. What does control mean? How does the brain engage in the different steps constituting parental or mating behavior? What are the different components of how these behaviors are executed and regulated? Why are these same neurons active in females and not in males in certain physiological circumstances, but that difference disappears in other physiological circumstances?
Also, how does the environment affect the function of neuronal circuits? All of this has a lot of implications, not only to understand how behavior works in terms of neurons and molecules but also for potential ways to understand and potentially cure mental disorders. Social behaviors are profoundly affected in mental disorders such as depression, schizophrenia, autism etc. Parenting behavior, for example, is associated with a very prevalent disorder called postpartum depression. It affects 10 to 20 percent of women and 5 and 10 percent of fathers. If we understand how the control of parenting works, maybe we'll find ideas on how to help such patients.