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He gives an IQ of 71, consistent with other sources. That means that approx 50% will be below the cutoff for mental retardation.
Generally, the IQ gap sizes found by Lynn are replicated by others, and by under tests such as PISA, TIMSS.
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He gives an IQ of 71, consistent with other sources. That means that approx 50% will be below the cutoff for mental retardation.
Generally, the IQ gap sizes found by Lynn are replicated by others, and by under tests such as PISA, TIMSS.
