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>Can anyone here tell me the canonical way of excluding environmental factors in intelligence research? By looking at the correlation of traits between monozyg
by bobcostas55 9y ago
>Can anyone here tell me the canonical way of excluding environmental factors in intelligence research?
By looking at the correlation of traits between monozygotic and dyzygotic (identical and fraternal) twins, you can tease apart the effects of genes, shared environment, and non-shared environment. The wikipedia page on twin studies is pretty good.
- ujal 9y agoTwin studies lets you fix the genetics factor, but unless you monitor the twins 24/7 or control their environment it is nearly impossible to tell if it influences your intelligence directly or through behavioural patterns. I am sure that if you train specifically for the g-factor test you would score much higher on it. And if that is the case it is your environment influencing your intelligence.