This demonstrates a tendency for girls to use interaction as a way of solving the problem while boys wanted to do use some form of action to solve the problem. In the absences of socialization to explain this difference, this is supportive evidence that male and female biology influences behavior. Another piece of medical evidence that supports this notion of biology influencing behavior is a medical condition known as congenital adrenal hyperplasia or CAH in which the fetus is exposed to unusual levels of androgens during development. Girls that suffer from this disorder have behaviors that we typically associate with boys and end up expressing interest in male typical activities and careers.
This evidence supports the notion that the presence of a particular level of male hormones in development influences the behavior of boys including the types of toys they play with, the types of activities they typically enjoy and the career choices they make.
Differences between males and females in visual-spatial ability, word usage and recognition and different brain activity during problem solving also suggest that there are fundamental differences between how the brains of males and females work. This difference can also be seen when particular areas of the brain are damaged. When the same area of the brain is damaged in men and women the effects of the damage is different in men and women. But this is only true of certain parts of the brain. Damage other parts of the brain and the effects are the same in men and women. Subtle differences in brain structure between males and females can be noted in a very few parts of the brain. These subtle structural differences coupled with the differences in brain activity during problem resolution would suggest that the differences in male and female behavior is a function both of how the brain is structured as well as how it is wired or how it functions.
There is also evidence that when it comes to academic performance that the distribution of girls along a bell shaped curve show a greater tendency to fall towards the average while boys distribution curve has a tendency to fall along a greater distribution along the curve, the average is the same for boys and girls but the distribution is different. In other words, more girls have a tendency to be clumped more around the average point while boys have a tendency to spread out more evenly. This means that more boys are going to be at the head of the class but there will also be more boys with difficulties than girls. Applied to behavior, this would suggest that we can expect more girls to act in a way that is considered average for children that age and that there is going to be a certain level of homogeneity with girls. With boys we can expect to see more variability among boys, some behaving in an average fashion, but more that struggle than girls. What this does is that it has a tendency to really isolate the boys that fall in the "struggle" category because there is a body of boys in the average group and a large number of girls in the average group.
What this difference in brain development is that boys act the way they do because they are built to act that way. A boy's development is a central aspect of a boy's behavior. Boys are built to be more active, to test the limits of their physical strength, to throw things to see how it flies, to explore the woods or the insides of the computer, to seek new things to grab their interests, to take on a challenge, to compete with one another, to learn by doing and by experiment, and to try to fix problems. Take that boy and put him into a setting in which he is expected to sit still for long periods of time and to learn through having someone talk to him, want to have him play quietly in the house and pay attention to his homework, to express himself by talking and you begin to see the dilemma that is being created for that boy and for those who are trying to enforce this structure. This structure is not allowing for how this child is created to operate, it pushes him towards "girl" behavior. Have enough of this constraint and you will begin to get school failure, school resistance, disruptive behavior and possibly rebellious behavior. So what can we do?
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