[oa335]

Socioeconomic status limits genetic potential. Thus the effects of SES dominate for those in poverty, but heritability dominates for those with higher SES.

For the intuition think of height - a malnourished child will not reach their “genetic” height. A fully nourished child will be limited by their “genetics”. Why wouldn’t other biological characteristics be similar?

https://en.wikipedia.org/wiki/Scarr%E2%80%93Rowe_effect

[rayiner]

Note that at what you’re describing is a hypothesis and at least some studies have failed to identify empirical support for it: https://www.sciencedirect.com/science/article/pii/S027656242...