Sunday, May 29, 2011

And you thought men and women had different brains.

The following is an excerpt from an article in Smithsonian magazine called Ten Myths about the Brain.


Men are from Mars, Women are from Venus. It was a relief to see this one put to rest, presumably by those in the know. [I bought the silly book with that title about 10 years ago. I'm no scientist, but I thought the observations were based on stereotypes.] The entire article is worth reading. I was absurdly happy to learn that, contrary to popular belief, we do not use only 10% of our brains. And that the brain is not like a computer, or the Internet, or a social network. Sometimes a brain is only a brain.

Men are from Mars, women are from Venus.
Some of the sloppiest, shoddiest, most biased, least reproducible, worst designed and most overinterpreted research in the history of science purports to provide biological explanations for differences between men and women. Eminent neuroscientists once claimed that head size, spinal ganglia or brain stem structures were responsible for women’s inability to think creatively, vote logically or practice medicine. Today the theories are a bit more sophisticated: men supposedly have more specialized brain hemispheres, women more elaborate emotion circuits. Though there are some differences (minor and uncorrelated with any particular ability) between male and female brains, the main problem with looking for correlations with behavior is that sex differences in cognition are massively exaggerated.

Women are thought to outperform men on tests of empathy. They do—unless test subjects are told that men are particularly good at the test, in which case men perform as well as or better than women. The same pattern holds in reverse for tests of spatial reasoning. Whenever stereotypes are brought to mind, even by something as simple as asking test subjects to check a box next to their gender, sex differences are exaggerated. Women college students told that a test is something women usually do poorly on, do poorly. Women college students told that a test is something college students usually do well on, do well. Across countries—and across time—the more prevalent the belief is that men are better than women in math, the greater the difference in girls’ and boys’ math scores. And that’s not because girls in Iceland have more specialized brain hemispheres than do girls in Italy.

Certain sex differences are enormously important to us when we’re looking for a mate, but when it comes to most of what our brains do most of the time—perceive the world, direct attention, learn new skills, encode memories, communicate (no, women don’t speak more than men do), judge other people’s emotions (no, men aren’t inept at this)—men and women have almost entirely overlapping and fully Earth-bound abilities.


Read more: http://www.smithsonianmag.com/science-nature/Top-Ten-Myths-About-the-Brain.html#ixzz1NoXTvdlD

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