#that there may be inherent differences between the races
#that there may be inherent differences between the races
#that upbringing, education and social factors can skew the results
#that upbringing, education and social factors can skew the results
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+
After nearly a century of IQ testing and [[educational reform]]s, some researchers have begun to assert that IQ can be influenced by the child's environment by as much as 30 points.<ref>3 weeks of intensive play of WFF 'N PROOF: The Game of Modern Logic increased average IQ scores by more than 20 points. [http://wffnproof.com/] </ref>