Years ago, I have seen this book review on Bryan Kaplan’s Selfish reasons to have more kids (https://www.lesswrong.com/posts/nzsHQzsvwLw6g4pyE/review-selfish-reasons-to-have-more-kids)
It argues, based on adoption and twin studies, that it is difficult to proove effect of parenting on almost anything. Among the rare exceptions listed, it is mentioned, that parents have “A small effect on educational attainment, but no effect on grades in school or on income”. So to me, it was weird, that the book The Genetic Lottery focuses so much on one rare parameter, the educational attainment, that can actually be affected by adoptive parents. Why not study the grades or income instead ?
Years ago, I have seen this book review on Bryan Kaplan’s Selfish reasons to have more kids (https://www.lesswrong.com/posts/nzsHQzsvwLw6g4pyE/review-selfish-reasons-to-have-more-kids)
It argues, based on adoption and twin studies, that it is difficult to proove effect of parenting on almost anything. Among the rare exceptions listed, it is mentioned, that parents have “A small effect on educational attainment, but no effect on grades in school or on income”. So to me, it was weird, that the book The Genetic Lottery focuses so much on one rare parameter, the educational attainment, that can actually be affected by adoptive parents. Why not study the grades or income instead ?