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Infants, Toddlers, & Preschoolers
Reply to "Is IQ inherited?"
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[quote=Anonymous]There's an important caveat about heritability. The AVERAGE heritability of IQ across studies is about 50% (based on twin and adoption studies). [b]BUT[/b], and this is an important but... heritability has been shown to be moderated by socioeconomic status. What this means is that if you take high SES groups, heritability is quite high (~70%), whereas if you sample low SES groups, heritability is pretty low (~25%). In other words, once you have a certain level of resources (nutrition, schooling, opportunities), then genetics matter quite a bit. But in the context of environmental strain (low SES environment), then the plusses and minuses in the environment (nutrition, schooling, opportunities) matter a lot. [/quote]
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