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>Perhaps intelligence is largely environmental How does this correlate with identical twin studies which show that over time their IQ converges, even in the ca
by FullMtlAlcoholc 9y ago
>Perhaps intelligence is largely environmental
How does this correlate with identical twin studies which show that over time their IQ converges, even in the case of separate upbringings, adoption, etc?
- openasocket 9y agoSource? Last I checked the literature identical twin studies showed a variance of as much as 20-30 points.
- FullMtlAlcoholc 9y agoI was going by the Minnesota Twin study. Is this research still valid?
- mikekchar 9y agoWould you mind giving a source as well? I've been doing some googling and every paper that references this seems to describe correlations to IQ scores rather than variance of IQ scores. For example Bouchard & McGue (1981) reported a correlation of twin's IQ of 0.86 if living together and 0.71 if living apart. That particular paper doesn't fill me with confidence (it seems to have a sample size of 111 and it's a meta-study), but it appears to be the most cited paper I've seen. I haven't seen anything that discusses a variance of IQ score, nor do I really understand what that means (what's the standard deviation of correlated multivariate distributions?) It would be interesting to see the analysis.
- throwaway91111 9y agoSorry, why are you asking me? It's the nytimes that didn't explain their mental leap from "insignificant effect" to "probably many more genes involved".