books.google.co.uk - The test score gap between blacks and whites--on vocabulary, reading, and math tests, as well as on tests that claim to measure scholastic aptitude and intelligence--is large enough to have far-reaching social and economic consequences. In their introduction to this book, Christopher Jencks and Meredith...https://books.google.co.uk/books/about/The_Black_White_Test_Score_Gap.html?id=Ywb7r1oOxJYC&utm_source=gb-gplus-shareThe Black-White Test Score Gap
