brain sizes: Einstein's and women's
johnknight at usa.com
Fri Jul 12 20:22:40 EST 2002
"Cary Kittrell" <cary at afone.as.arizona.edu> wrote in message
news:agn34f$hla$1 at oasis.ccit.arizona.edu...
> In article <SZCX8.47920$P%6.3357792 at news2.west.cox.net>
> "John Knight" <johnknight at usa.com> writes:
> <"Shadow Dancer" <insomniac at winterslight.org> wrote in message
> <news:agm2br$mukqa$1 at ID-150265.news.dfncis.de...
> <> Here are some I just dug up:
> <> And yet another:
> <> http://faculty.washington.edu/chudler/heshe.html
> <> My terminology was wrong, I meant the corpus callosum. Either way,
> <> use their entire brains more efficiently than men do and, once again,
> <> does NOT matter :P
> <Not only was your terminology wrong, but so were your conclusions. Here
> <some I just dug up. In the following 12 subjects, no country scored
> <than American 12th Grade Girls who scored:
> What Johnny isn't telling you is that he "just" dug these up years ago,
> and has been drawing erroneous conclusions ever since. For example
> he also is not telling you that:
> <Zero percent of American 12th grade girls correctly solved TIMSS math
> <Zero percent of American 12th grade girls correctly solved TIMSS physics
> that I have twice in the past demonstrated that his "method" of
> which "led" to the above "conclusions" would also "lead" to the
> a. anyone answering all questions correctly should receive a
> mark of only 80%, and
> b. five out of every four girls got one question wrong. Can
> you say reduction ad absurdem?
> It's not the girls who can't apply math correctly.
> Google has it.
> -- cary
Let's use a simple example of how wrong you are, cary.
Question K09 on the 12th Grade TIMSS Math test given to 12th graders around
the world in 1995 reveals an astounding difference in math skills between
the sexes in all the countries who participated. The average difference in
all countries was 10.5%, with 47.3% of boys and 36.8% of girls answering
correctly, but the difference in the US was 22.1% (28.6% of girls and 50.7%
of boys). In countries like Cyprus where 60.1% of the boys answered
correctly, guesses on the test would not have influenced the scores by that
much, but where only 28.6% of American girls answered correctly, guesses
must be taken into account.
Since this was a multiple choice question with four possible choices, the
probability of getting the correct answer just by guessing is 25%. In other
words, for every four students who guessed, one of them would have gotten
the correct answer by chance. The maximum score would have been achieved
had all the students who didn't understand the problem guessed at the
answer, so where 28.6% of American girls answered the problem correctly,
23.8% of them got the correct answer by guessing, and 4.8% indicated that
they understood the problem [x = total guesses, 0.25x = correct guesses,
0.75x = incorrect guesses = 71.4%, x = 95.2%, 0.25x = 23.8%, 28.6% got the
correct answer - 23.8% guessed the correct answer = 4.8% understood the
problem]. However, with an estimated error of plus or minus 3%, only 1.8%
are known with certainty to have understood the problem.
American boys didn't do that much better, since [prior to the adjustment for
the 3% error] just 34.3% of them got the correct answer because they
understood the problem, 16.4% got the correct answer because they guessed,
and 49.3% guessed incorrectly. Thus only 31.3% are known with certainty to
have understood the problem.
Prior to adjustment for the 3% error, 53.2% of the boys in Cyprus guessed,
39.9% guessed incorrectly, 13.3% guessed correctly, and 46.8% understood the
problem [x = total guesses, 0.25x = correct guesses, 0.75x = incorrect
guesses = 39.9%, x = 53.2%, 0.25x = 13.3%, and 60.1% correct answers - 13.3%
correct guesses = 46.8% who understood the problem]. Only 43.8% are known
with certainty to have understood the problem, so per capita, compared to
American boys 40% more boys in Cyprus are known to have understood the
problem, and compared to American girls, 24 times as many were. Compared to
American girls, 17 times as many American boys are known to have understood
Is this adequate proof that our attempt to establish "gender equality" is a
failure? Yes. To achieve that ephemeral goal, our "educators began an
unnecessary and destructive "gender war" of unprecedented proportions, more
than doubled education spending as a percent of GDP, and out-spent by more
than three times countries whose students far outperformed ours. Japan,
whose 8th graders scored 105 points higher than ours, spends half as much
for education. Korea, whose 8th graders scored 107 points higher than ours,
spends even less per student than Japan.
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