>>147
これだそうだ

ttps://academic.oup.com/qje/article-abstract/123/1/279/1889808
＞these effects are largest for children from households where English is not the primary language,
＞for children whose mothers have less than a high school education, and for nonwhite children.

＞アメリカでの調査で親が非ネイティブのケースまで含んでいる結果