Jeremy Ackerman-Yost
Explorer
Bumbles, I'm sorry if I offended you.  I find all of this hysterical for a variety of reasons, and it probably makes me a tad insensitive.
I'll stay away from further commentary on that specific issue.
However, I can't really let this go by from your other post:
For one thing, testosterone doesn't cross the blood-brain barrier as testosterone. It is converted into estrogen at crossing, so you literally can't have opposite effects on brain structures with prenatal testosterone that is fetus-sourced. Any (highly debatable) male-female brain differences have to be secondary to other changes. Furthermore, their study has no data on mother-sourced hormones for the children they tested, so it's one inference piled on top of another, plus those inferences are about step 1 and step 7 with no information on steps 2, 3, 4, 5, and 6.
Additionally, effects of this type even when they do work out usually account for something like 1-2% of the variance, which is effectively zilch. That's less than the change in test scores that results from having a mild stomach upset the day of the test.
I would take that with at least a grain of salt. Maybe even a big ol' salt lick.
				
			I'll stay away from further commentary on that specific issue.
However, I can't really let this go by from your other post:
Prenatal environment and hormonal effects was actually my field for a few years, and I can tell you that's a pretty impressive load of tripe. I'm trying to track down the primary sources on it and keep coming up with nothing but contradictions.There's a bit here:
Half Sigma: Biological basis for sex differences in math ability
I'm sure there's lots of other studies you can find.
For one thing, testosterone doesn't cross the blood-brain barrier as testosterone. It is converted into estrogen at crossing, so you literally can't have opposite effects on brain structures with prenatal testosterone that is fetus-sourced. Any (highly debatable) male-female brain differences have to be secondary to other changes. Furthermore, their study has no data on mother-sourced hormones for the children they tested, so it's one inference piled on top of another, plus those inferences are about step 1 and step 7 with no information on steps 2, 3, 4, 5, and 6.
Additionally, effects of this type even when they do work out usually account for something like 1-2% of the variance, which is effectively zilch. That's less than the change in test scores that results from having a mild stomach upset the day of the test.
I would take that with at least a grain of salt. Maybe even a big ol' salt lick.
 
				 There are also many stupid studies that support sexist ideas. The blog you linked to says: "That there is some biological basis behind the observation that men are better at math than women is plain old common sense, because there have never been any sociological explanations that made sense." Hmm. I am not sensing a bias!
 There are also many stupid studies that support sexist ideas. The blog you linked to says: "That there is some biological basis behind the observation that men are better at math than women is plain old common sense, because there have never been any sociological explanations that made sense." Hmm. I am not sensing a bias!