brain sizes: Einstein's and women's

John Knight johnknight at usa.com
Wed Jul 17 18:34:03 EST 2002


"Jet" <thatjetnospam at yahoo.com> wrote in message
news:3D35DC1F.183C0D at yahoo.com...
>
>
> John Knight wrote:
> >
> > "Cary Kittrell" <cary at afone.as.arizona.edu> wrote in message
> > news:ago04g$3dn$1 at oasis.ccit.arizona.edu...
> > > In article <hopems-1207022009450001 at cs6625171-151.austin.rr.com>
> > hopems at mail.utexas.edu (Hope Munro Smith) writes:
> > > <
> > > <In article <3d2f507c.20059553 at news.freeserve.net>,
> > > <angilion at ypical.fsnet.co.uk (Angilion) wrote:
> > > <
> > > <> [several groups cut to avoid excessive crossposting]
> > > <>
> > > <> On Fri, 12 Jul 2002 15:19:57 -0500, "Shadow Dancer"
> > > <> <insomniac at winterslight.org> wrote:
> > > <>
> > > <> [..]
> > > <>
> > > <> >http://psychclassics.yorku.ca/Thompson/psychsex.htm
> > > <> >
> > > <> >To Quote:
> > > <> >
> > > <> >"The most important single contribution to our knowledge of the
facts
> > of the
> > > <> >case is to be found in Dr. Franklin P. Mall's paper 'On Several
> > Anatomical
> > > <> >Characters of the Human Brain Said to Vary According to Race and
Sex,
> > with
> > > <> >Especial Reference to the Weight of the Frontal Lobe' (Am. J. of
> > Anat., IX.,
> > > <> >p. 1, 1909). Dr. Mall's general conclusion is that there is as yet
no
> > > <> >reliable evidence for the variation of anatomical characters with
> > either
> > > <> >race or sex. The belief that the brains of females differ from
those
> > of
> > > <> >males has been widely accepted, and has been thought to be
conclusive
> > > <> >evidence of the permanent inferiority of the female mind.
> > > <>
> > > <> That's obviously out of date - the general belief nowdays is that
women
> > > <> are *more* intellectually capable than men.  Try reading the posts
> > > <> John Knight was replying to, for example.  Are you going to
> > > <> counter those, or are you one of the many who think that female
> > > <> people are innately superior to male people?
> > > <>
> > > <> You are going back to 1910 for that paper.  Do you think that's
> > > <> actually relevant to today, especially in her conclusions about
> > > <> the prevailing belief concerning which sex is mentally superior?
> > > <
> > > <Really, use of such dated material is quite puzzling.
> > > <
> > > <>
> > > <> As an aside, I have seen it hypothesised that brain mass correlates
> > with
> > > <> height.  That would neatly explain the average difference in brain
> > > <> mass between men and women (as an artefact of the average
> > > <> difference in height) and the hypothesis sounds plausible.
However,
> > > <> I haven't seen any evidence for it.  Do you have any?
> > > <>
> > > <
> > > <I'd be interested in hearing it as well.  It would make
> > > <sense that a larger body would need a larger brain to work
> > > <its various systems, which again would prove that brain size
> > > <says nothing about intelligence.
> > >
> > >
> > >
> > > That's quite standard in biology: neurological comparisons
> > > are always made on a brain/body mass basis, never on absolute
> > > brain size.  (what's the smartest blue whale you've ever met?)
> > >
> > >
> > > -- cary
> >
> > Which may be why so many Americans are so misled about the relationship
> > between intelligence and brain size.
> >
> > It's absurd to infer that an 18% increase in body mass requires an 18%
> > increase in brain cells.  It takes *precisely* the same set of
instructions
> > and *precisely* the same compute power and *precisely* the same amount
of
> > memory or storage, to control a 12 year old girl's body as it does to
> > control Akebono's body.  Making the body bigger doesn't drain any
resources
> > at all away from the brain.
> >
> > We're talking about averages here, and IF [note big "if"] it's true that
> > brain size and height are correlated, then it's a *given* that height
and
> > intelligence are correlated.
> >
>
> I really have to wonder if you are having us on...
>
> J

No.  This is a very simple, straightforward principle of probability &
statistics which even you feminazis should be able to comprehend.

IF height and brain size are correlated, then SINCE intelligence and brain
size are correlated, THEN height and intelligence are correlated.

But note the big IF.  I doubt if it's true that height and brain size are
correlated.  There are too many examples of the reverse.  Tall niggers in
Africa are dumber than a box of rocks, and have very small cranial cavities,
whereas Koreans have some of the largest cranial cavities and some of the
highest IQs, even though they're short.

There's always the possiblitity that within each race and sex that there is
a correlation between height and brain size, though.  And even then there
will be exceptions to the rule, and I just don't see how r-squared could be
that high.

John Knight





More information about the Neur-sci mailing list