From: Rafal Smigrodzki (rms2g@virginia.edu)
Date: Thu Oct 03 2002 - 09:15:17 MDT
owner-extropians@extropy.org wrote:
>> The argument for the dysgenic effect of high-IQ emigration on the
>> remaining population is however independent of the above - if you
>> kill the smartest 25% of the population (or remove them from the
>> group by emigration), the frequency of high-IQ alleles will be
>> lower. In the example above, try to see the frequency of F2
>> (second-generation filial) and subsequent generation phenotypes from
>> the matings between the first three genotypes (the fourth moved to
>> Palo Alto). A phenotype will depend on the total number of
>> homozygous capitals - you will get some phenotypes smarter than the
>> paternal generation but the overall frequency of high-IQ will be
>> lower with each generation where you remove the top achiever.
>>
>> Rafal
>
> A population to test this hypothesis would be younger generation
> Cambodians. I wonder if there exists anything remotely like reliable
> pre-Khmer Rouge data on IQ? I googled for any studies like this but
> came up empty.
>
### This might be pretty difficult to standardize - I would expect there to
be significant differences in nutritional status histories between various
age cohorts in Cambodia, which could confound the analysis. The pre-Polpot
cohort is likely to have had good nutrition (Cambodia was at that time the
richest country in Southeast Asia, I was told), the Killing Fields
generation was starving during childhood, and the youngest groups again are
eating well (and have video games for stimulation, too).
Rafal
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