WilliamWDelaney wrote:
Please read the stuff that I have posted here.
There is scientific evidence that gonadal steroids have a measurable effect on performance in tasks involving certain aspects of spatial reasoning and verbal memory, and there is evidence that they also impact divergent versus convergent thought processes.
I have provided the concrete, authentic, falsifiable evidence that you are claiming, here, there is a deficit of. Now, I agree that most people who comment on either side of the issue are profoundly lazy, and they never contribute anything tangible or falsifiable to the discussion. I am one of those people, though, who have busted their asses to comprehend this issue, as well as many others, having read thousands of pages of authentic material on it. Try actually reading my citations. They are interesting.
But what do they tell us?
They tell us that in mice, castration impacts delayed spatial memory access, but does not affect spatial reference memory (among others). Androgen replacement recovered long term (>24h) spatial memory performance, but had no impact on 1hr retention.
This suggests that while (in mice) androgens affect spatial memory performance, that effect is in a narrow area of memory performance (specifically, short-term spatial memory); it contrasts with impacts in other species (different observations have been made on rats); and--most importantly for this discussion--it does not present a generalized cognitive benefit.
Furthermore, the methodology used in the study does not serve to distinguish between relative concentrations of androgens in male and female subjects. Women's bodies produce naturally occuring androgens, and there is nothing to demonstrate that their concentration is insufficient to trigger the same performance impacts as the higher concentration in males.
Similarly, estrogens are equally capable of inducing structural change in the brain, and given the ability of androgens and estrogens to convert into each other, isolating impacts is extremely difficult.
But what this really tells me is that you have limited your research to abstracts, and do not really understand the science underlying the studies. You are drawing inappropriate conclusions from the research.
If you want to tell me that male brains and female brains are different, I will agree with you unreservedly. But if you want to tell me that sex differences between male and female brains have demonstrable variances in cognitive performance, then you are going to find me far less receptive to your argument.
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--James