Previous work by the authors suggested that during the 1970s and 1980s, a person?s early cognitive ability became a less important determinant of his or her eventual educational achievement. Furthermore, over the same time period, family background started to have a greater impact on a person?s...

Previous work by the authors suggested that during the 1970s and 1980s, a person's early cognitive ability became a less important determinant of his or her eventual educational achievement. Furthermore, over the same time period, family background started to have a greater impact on a person's...