3 ms·
Heritability (i.e. narrow-sense heritability as typically used in most research articles) is not so clear-cut as to be split between nature and nurture. Even th
by lucienlecam 7y ago
Heritability (i.e. narrow-sense heritability as typically used in most research articles) is not so clear-cut as to be split between nature and nurture. Even the GP is slightly incorrect when saying:
> ...as opposed to environmental factors
because for heritability, the distinction is between the variance explained by additive genetic effects versus the total variance of the trait of interest. There are other sources of phenotypic variance like epigenetics, non-additive genetic effects, or complex interactions that fall outside the scope of heritability.
- username90 7y agoWe have 3 sources of difference, genetic heritability, home environment and "others". The things you talk about would go under "others", and they aren't very interesting since we have basically no influence over them, as everything we can influence via nurture goes under home environment and nature via genetic heritage. So for example, of we compare growing up in a rich or a poor household (this includes going to a better school, better neighborhood, better food etc), most of these studies shows that it has almost no effect at all.
- BurningFrog 7y agoYou influence "others" by putting your kids in a good school. It's one of the main drivers of varying housing costs in the US.
- deleted 7y ago[deleted]
- username90 7y agoYour parents determines your school, so the quality of your school can't be in "others". The only way school could be in "others" in these studies is if parents often put one twin in a good school and the other twin in a bad school, but I strongly believe that isn't the case.
- BurningFrog 7y agoIn your own words: > We have 3 sources of difference, genetic heritability, home environment and "others" Clearly, school is not home environment.
- username90 7y agoSchool is determines by your home environment, hence it is a part of the home environment bucket. "other" is not: "everything except home environment and genes", it is: "everything not determined by the home environment or genes".
- jbc1 7y agoYour parents don't in all cases. I went to a good school and my brother went to a bad school. My parents didn't choose that. The good school did, it was selective in its students. Selective school aren't all that rare.
- polski-g 7y agoSchool is included in the shared environment because if you had identical twins they would be going to the same school and same classes.