John Knight wrote:
> "Mark D. Morin" <mdmpsyd at NOSPAMgwi.net> wrote in message
> news:3D2C0FF9.5050309 at NOSPAMgwi.net...>>>John Knight wrote:
>>>>>"Mark D. Morin" <mdmpsyd at NOSPAMgwi.net> wrote in message
>>>news:3D2BA019.3060808 at NOSPAMgwi.net...>>>>>>>>>>John Knight wrote:
>>>>>>>>>>>>>"Mark D. Morin" <mdmpsyd at NOSPAMgwi.net> wrote in message
>>>>>news:3D2ABC38.4040305 at NOSPAMgwi.net...>>>>>>>>>>>>>>>>>>>>>John Knight wrote:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>You seem to be ignoring Peter's original point about the differences
>>>>>>> in
>>>>>>>>average size between male and female brains. To be specific, it's of
>>>>>>>>>>>much
>>>>>>>>>>>>>>>>>>>>>>concern to his point that the male brain contains an average of 3 1/2
>>>>>>>billion or 18% more brain cells than the female brain, and that their
>>>>>>>>>>>sizes
>>>>>>>>>>>>>>>>>>>>>>are correspondingly different.
>>>>>>>>>>>>Reference?
>>>>>>>>>>>>>>>>>>>>>>>>>>The url was posted previously, but following are several articles from
>>>>>>>that
>>>>>>>>>>>reference.
>>>>>>>>>>John Knight
>>>>>>>>>>>>>>>>>>>>http://christianparty.net/brainsize.htm>>>>>>>>sorry, but all i see are assertions, no empirical research.
>>>>>>>>>>>>>How much more empirical research do you need? You've got scientists
>>> from
>>>>all around the world collaborating on brain size
>>>>and coming up with different numbers. look at the reported measurement
>>error.
>>>>> Where? You keep saying this, and I keep pointing out that any possible
> measurement error is 1/20th to 1/70th of the sex differences by race, and
> you come back again with the same comment about measurement errors. What
> exactly are you referring to?
Try taking a look at HOW they computed these statistics.
>>http://christianparty.net/greracesexyear.htm contains 63 data points for GRE
> scores by race, sex, and year. Please point out exactly where you believe
> these measurement errors are.
>>>>...
>>>>>>>>>>quite the spread. How much variablility was explained by age and how
>>>>much by gender?
>>>>>>>>>Do you have evidence that there's a significant change in brain size as
>>>people get older?
>>>>yes
>>>>> uh, how much, where's the url, how does it compare to the sex and race
> differences, could this explain why correlation is .88 rather than 1.0?
No URL. Real Journals, Real research. Pull any issue of Neurology.
There is a VERY robust correlation to brain volume and age. Any
research that does not attempt to control for this fact is illustration
of the fact that the individuals do not know how to conduct research.
>>>>>Or better yet, could this change possibly exceed a
>>>standard deviation which would be only 98 million brain cells (compared
>>> to
>>>>the 3.5 billion brain cell difference between men and women)?
>>>>brain cells were not counted--volume was measured and assumptions were
>>made about number of cells. Given that there are other reasons for
>>differences in volume, the hypothesis of differing number of cells
>>warrants demonstration rather than assertion.
>>>>> Not true.
Then were do the numbers regarding the number of cells come from?
...
>>>>EXCEPT "IQ tests".
>>>>sorry, the methods that they reported do not support this generalization.
>>>>> Where is you evidence?
The very URLs you posted. Look at how their stats were computed. The
method does not support your conclussion.
...
>>and how do you know this?
>>> We know this because men and women have the same median "IQ scores", when
> the difference between them in GRE Quantitative is almost a standard
> deviation. An "IQ test" which can't even detect this huge difference in
> quantitative skills would be about like using a rubber band to measure 3'.
it's interesting that the ONLY evidence in support of this claim is
coming from one originating url.
>>>>>>They would have reached an entirely different conclusion
>>>if they'd compared it to GRE or TIMSS.
>>>>assuming the ability to measure brain size reliably.
>> I guess you're just going to keep on saying this without posting any
> evidence, even though such a task could NOT be simpler.
it's not my job to post evidence. it's the job of the researchers to
post evidence that measurements were done reliably. When their own data
represent a range of values as they report, their own report says that
measurement is unreliable.
>> Every method that's been used, all the way from filling empty cranial
> cavities with sunflower seeds, to MRI, show the same proportionate
> difference between the sexes.
that's incorrect
>> Do you think that if you just keep posting this denial, that decades of
> scientific data will just evaporate?
you have only posted assertions, not data.
--
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