[QUOTE=brazil84]
As I said before, it doesn’t follow from your premises that Lynn’s numbers have to be false. And even if his numbers are off, you agree with the basic point that low IQ = low GDP.
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It is not supposed to follow from my premise. It is an observation of reality. Lynn’s numbers are irretrievably wrong. He claims IQs for entire populations that are in direct conflict with the possibility of those societies surviving for months, much less years.
My premise is that IQ can only be measured on a gross scale.
My observation is that people who test at a level of 70 or below cannot survive if they do not receive substantial support from society–support that would not be available in a society in which fully half the people are at or below that level of intelligence.
Low IQ = low GDP is not a “basic point” so much as a tautology. It is certainly not a “basic point” for Lynn and Vanhanen, who make the more precise claim that there is a direct correlation between IQ and GDP at all levels. They do not say that if we found a society full of low intelligence people, then that society would struggle to survive. They actually claim that they can plot either the intelligence or the GDP of a society simply by knowing the other number and assuming a direct correlation. My attacks on their work are based on the clear problem that they have made a claim that there are multiple societies in the world in which more than half of the population is not capable of surviving, based on an acceptance of their numbers.
I have challenged that point because it is so clearly false, but their thesis is also subect to objection at the other end where they carefully lay out IQs (derived, as noted earlier, from the fudging and invention of many disparate numbers) alongside national GDPs to claim a direct correspondence when they are working on a range of IQ that is statistically insignificant.
[QUOTE=brazil84]
It would seem to me that if you average IQ scores over many many people, it would be easier not harder to read something into the total. For example, let’s suppose that the average IQ in the United States is 99. What do you think would happen to the average IQ if all of a sudden, the U.S had worse education; worse nutrition; etc.? I think the average IQ would drop by at least a few points. And the difference would mean something.
[/quote]
[ nitpick ] It is the contention of proponents of IQ tests that their culturally neutral efforts will not be affected by education. This whole farrago of psychometrics is based on their belief that intelligence is innate and that they are measuring something separate from education. [ /nitpick]
As to the broader question, I have seen no evidence that IQ can be tested with consistent accuracy to within a couple of points. So even if you are extending your population sample to 300,000,000, you are still left with a question of analysis. In order to draw meaning, you’d have to examine where the numbers originated. Did the numbers drop because everyone with an IQ of 130 and above “lost” some portion of their intelligence? Did the numbers drop because there was an influx of much lower IQ people? Did the numbers drop for every human in the nation? If it is one of the first two scenarios, the bulk of the population is not affected, so the numbers really do not have meaning for day-to-day existence. (For the second scenario, it might mean that the country has to address a social problem with an influx of new people.) If it is the third scenario, then a drop of one or two points is well within the range to lack meaning.
[QUOTE=brazil84]
Ok, so let’s keep things simple by limiting the discussion to rural areas, which is apparently where most Nigerians live anyway.
[/quote]
Why? I have already shown, (although not to your satisfaction) that agriculture cannot be carried out by large numbers of independent but mentally retarded individuals. If we say that the ones with lower intelligence moved to the cities, you have to explain how they are surviving in a monetary environment and if the ones with lower intelligence have stayed in the country, you have to explain how they can plant, cultivate, harvest, process, and store their food on an annual cycle.
[QUOTE=brazil84]
That would be very interesting if Rushton has stated or implied that white people are superior to blacks and Asians.
Do you have a cite?
[/QUOTE]
He is pretty careful to avoid saying that, explicitly, even denying that assertion, if rather ineffectively, although that is a fair conclusion (drawn by numerous reviewers) regarding the thesis of his book Race, Evolution and Behavior.
= = =
I get the impression that we might be talking at cross purposes, here.
You seem to be saying that Lynn and Vanhanen are only discussing the possibility that average national intelligence if low enough or high enough could have a bearing on GDP and that that is a valid premise to explore. I suppose that there might be some truth in that–if there was actually a considerable difference in intelligence among humans unaffected by all the various factors of ecology, natural resources, political strife, and luck. However, I doubt that you could actually find a real case to demonstrate that contention.
I am saying that Lynn and Vanhanen have made a much more explicit claim: that intelligence dictates a direct correlation to GDP (even in the upper registers where the numbers are not significant) and that they claim that intelligence actually dictates the success of a nation. They then go on to support their belief by using unreal statistics (unrealistically low at one end and unrealistically fine at the other end) to manufacture support for their work. Given the other issues facing the world, I contend that they have failed to make their case and that we have no reason to look to their work when attempting to solve any issues among or within nations.