In 1973 the black-white gap in employment rates was 9 percentage points; by 1989 it had widened to 15.

Worse yet, even when the parents' income and education are controlled for, the black-white gap reappears within just two years of a child's entering school.

This paper takes advantage of a new trove of government data that helps reliably address the black-white gap.

The data also show the black-white gap to be a recent phenomenon.

"No one has advanced a plausible environmental explanation for the black-white gap"

"Therefore it is more reasonable to assume that part of the black-white gap is genetic in origin"

The black-white gap in death rates also has been widening.

The black-white gap has widened slightly over the last 10 to 15 years.

Solve those, and the black-white gap will solve itself.

The black-white gap in the US is not due to test bias.