UNT's Education Dean is the Foremost Expert on Why Girls Throw Like Such Girls

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Of course, not everything can be explained away through genetics.
Saying someone throws like a girl is not generally acceptable, at least in the age of Title IX and political correctness. Such pronouncements reek of paternalism; certainly we're sophisticated enough to know that gender differences that seem to be innate are really learned, the product of a lifetime of social conditioning.

But the question nevertheless remains: Why, when there are demonstrably better and much less silly looking ways to launch a projectile with one's arm, do girls insist on throwing like girls?

Jerry Thomas, the dean of education at the University of North Texas, has the answer.

Tamar Haspel tackled the question yesterday in the Washington Post, drawing on personal experience:

A decade or so ago, in New York, a ball came flying over an 18-foot schoolyard fence just as I was passing by. There was no one I could hand it off to, and a gaggle of fifth-graders was waiting for me to toss it back. I had so little faith in my overarm throwing that I had to go underhand. The squeal of brakes was my first indication that the ball had ended up behind me, in the middle of Columbus Avenue. The best I can say about this incident is that nobody got hurt.

There just happens to be a half century of research into the girly-throwing question, which Haspel proceeds to summarize. Mostly, though, she summarizes the work of Jerry Thomas, the dean of education at the University of North Texas.

"The overhand throwing gap, beginning at 4 years of age, is three times the difference of any other motor task, and it just gets bigger across age," Thomas writes in a paper cited by Haspel. "By 18, there's hardly any overlap in the distribution: Nearly every boy by age 15 throws better than the best girl.

Nor is the gap confined to the United States or to societies where boys are taught to throw at a younger age. In Australia, Thomas found that aboriginal girls throw tennis balls at three-quarters the velocity of boys of the same age even though both are taught to hunt early on.

The difference, then, is largely genetic, and not just because males tend to be stronger, as Haspel writes.

The power in an overhand throw -- and in a golf swing, a tennis serve or a baseball swing -- comes from the separate turning of hips and shoulders. The hips rotate forward and the body opens, and then the shoulders snap around. Women tend to rotate their hips and shoulders together, and even expert women throwers don't get the differential that men get. "The one-piece rotation is the biggest difference," says Thomas. "It keeps women from creating speed at the hand." Even when women learn to rotate hips and shoulders separately, they don't do it as fast as men.

Why so many boys throw like girls remains an open question.

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Wow, who'd a thunk it?  Men and women are different.  Many of us have known about and celebrated these differences all our lives.  It's nice that the observer staff is finally catching on.


Yeah, and generally speaking women are better at things that require really fine finger coordination. No amount of political correctness is going to change some facts of life. However, 99.9% of the time we are equally capable and deserve equal opportunities and compensation for work done.


not to get all scientific, but girls also look cuter when they throw

ThePosterFormerlyKnownasPaul topcommenter

Well that is one mystery solved.


I would go one step further and say that because of the complex body motion required to successfully throw some object at a high speed and accurately that there is a genetic basis.


After all men were generally considered to be the hunters in paleolithic times.  To be able to throw a rock at a high speed and accurately enough to hit a small mammal (think rabbit, squirrel, etc.) that would stun or incapacitate said animal would be a genetic advantage.


in support of my hypothesis I offer the different traits shown by men and women when shopping for clothes.  Men will go to the store, buy the pants and come home.  This is no different from going out, slaying the beast and dragging it back to the cave.  Women on the other hand have to go to several different stores to purchase a single pair of shoes.  This is no different from gathering fruits, berries and nuts where the gatherer has to visit several different bushes (or locations) in order to find the best edible items.


I contend that many of our actions and behaviors are the result of what it took in order to be a successful cave man.


"...certainly we're sophisticated enough to know that gender differences that seem to be innate are really learned, the product of a lifetime of social conditioning."


I see faith-based biology is not solely the purview of the religious right.

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