Schooling, Family Background, and Adoption: Is It Nature or Is It Nurture?
利用跨代家庭样本，比较亲生与收养子女的受教育程度，估计约55-60%的父母能力通过基因遗传。
When parents are more educated, their children tend to receive more schooling as well. Does this occur because parental ability is passed on genetically or because more educated parents provide a better environment for children to flourish? Using an intergenerational sample of families, we estimate on the basis of a comparison of biological and adopted children that about 5560 percent of the parental ability is genetically transmitted.