RE: taxi drivers' hippocampi

From: Gatherer, D. (Derek) (D.Gatherer@organon.nhe.akzonobel.nl)
Date: Tue Mar 21 2000 - 07:43:15 GMT

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From: "Gatherer, D. (Derek)" <D.Gatherer@organon.nhe.akzonobel.nl>
To: "'memetics@mmu.ac.uk'" <memetics@mmu.ac.uk>
Subject: RE: taxi drivers' hippocampi
Date: Tue, 21 Mar 2000 08:43:15 +0100
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On Mon, 20 Mar 2000, Wade T.Smith wrote:
>
>And, (I shudder to ask) _is_ this a hypothesis of Blackmore's- that such
>plasticity _should_ be evidenced

Robin:
I think the reference was to her suggestion that evolutionary expansion of
the
brain was meme-driven, so it's not relevant where we're looking at expansion
of
an individual brain (except for Lamarkians!).

Derek:
Unless there is some genetic variability in the capacity of the brain to
respond favourably to such an environmental stimulus. Cavalli-Sforza has
modelled a situation in which IQ is the result of such a mechanism, with
environmental/cultural factors interacting with genetic variation.

See, for instance
Cavalli-Sforza L & Feldman MW (1973) Models for cultural inheritance. I.
Group mean and within group variation. Theor Popul Biol. 4, 42-55.
Cavalli-Sforza LL & Feldman MW (1973) Cultural versus biological
inheritance: phenotypic transmission from parents to children. (A theory of
the effect of parental phenotypes on children's phenotypes). Am J Hum
Genet. 25, 618-37. Feldman MW & Cavalli-Sforza LL (1976) Cultural and
biological evolutionary processes, selection for a trait under complex
transmission. Theor Popul Biol. 9, 238-59.

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