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38331Re: [evol-psych] Re: Africa, Race & I.Q... [race & social functioning?]

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  • Jack Parsons
    Oct 2, 2005
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      ----- Original Message -----
      From: "Jack Parsons" <jackparsons@...>
      To: "Ralph L Holloway" <rlh2@...>
      Sent: Sunday, October 02, 2005 11:24 PM
      Subject: Re: [evol-psych] Re: Africa, Race & I.Q... [race & social
      functioning?]


      > Dear Ralph/colleagues,
      > Just a hazy memory from some 40-45 yrs
      > back -- can't recall refs. -- I seem to remember reading what looked like
      > a sound study of development rates in black & white South African infants.
      >
      > Stage 1. black babies developed appreciably more rapidly at first
      >
      > Stage 2. white toddlers fairly soon caught up and then began to leave
      > their little black compatriots behind
      >
      > Stage 3. white nippers zoomed ahead
      >
      > Reasons offered:
      >
      > 1. Black infants soon began to suffer from slow/inadequate myelination --
      > the sheathing of nerve-fibres
      >
      > 2. This, in turn, was probably caused by increasingly inadequate nutrition
      > in the case of the black infants
      >
      > Sorry folks -- can't be more specific. Jack P
      >
      >
      >
      > ----- Original Message -----
      > From: "Ralph L Holloway" <rlh2@...>
      > To: "Roy Sugarman" <beegone@...>
      > Cc: <aelewis@...>; <foo@...>;
      > <evolutionary-psychology@yahoogroups.com>
      > Sent: Friday, September 30, 2005 3:16 PM
      > Subject: Re: [evol-psych] Re: Africa, Race & I.Q... [race & social
      > functioning?]
      >
      >
      >> On Sun, 25 Sep 2005, Roy Sugarman wrote:
      >>
      >>> Hi
      >> Interestingly, Black children score higher than White children in South
      >> Africa on most measures until ab about school going age, after which the
      >> balance tilts in the other direction, mostly a sign of the poorer quality
      >> of
      >> education: in private schools, with equal opportunity, this change doesnt
      >> exist and the results are equal for both groups. There is still some
      >> inequality in Afrikaans-English kids though. In the 50's, Afrikaners
      >> scored
      >> two standard deviations below their white English speaking South Afican
      >> counterparts, but after the 70's when television came to South Africa,
      >> the
      >> difference shrank slowly to half a sd. Its culture more than brain, and
      >> more
      >> importantly, modernisation.
      >>
      >>
      >> Perhaps I am missing something here, and if so, my apologies. My
      >> understanding is that in addition to a somewhat shortened pregnancy time
      >> for people of African descent (about 5-7 days earlier than in Asian/
      >> European descent), the sensorimotor development of African children is
      >> simply faster. When one considers that African brains bear the same
      >> metabolic costs as brains from European or Asian descent groups, it makes
      >> sense to regard advanced maturation of the nervous system as a positive
      >> adaptation in regions of high heat stress, i.e, tropical conditions. The
      >> brains still function well in most social/ enironmental challenges, and
      >> reproduction is clearly not selected against. The downside, perhaps, and
      >> it is a strong perhaps, is that the brain matures faster in peoples of
      >> African descent which may make advanced learning more difficult for some
      >> part of the normal distribution of maturation. Have I got these basic
      >> facts wrong?
      >>
      >> Thanks,
      >>
      >> Ralph L. Holloway
      >> Dept. Anthropology
      >> Columbia University
      >> NY, NY 10027
      >> 212-854-4570
      >> Fax= 212-854-7347
      >> Web Page www.columbia.edu/~rlh2
      >>
      >>
      >>
      >>
      >>
      >> Yahoo! Groups Links
      >>
      >>
      >>
      >>
      >>
      >>
      >>
      >>
      >
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