A decade after their military service, white veterans of the draft were earning about 15 percent less than their peers who didn’t serve, according to studies from MIT economist Josh Angrist.

Now, new research suggests that the draft did more than dim the prospects of that earlier generation: The children of men with unlucky draft numbers are also worse off today. They earn less and are less likely to have jobs, according to a draft of a report from Sarena F. Goodman, an economist with the Federal Reserve Board of Governors, and Adam Isen, an economist at the Treasury Department. (A copy was released by the Fed in December, but research does not reflect the opinions of the government.)

The researchers have not nailed down how, exactly, any of this is happening, nor why the disadvantage appears to be over twice as potent for sons than for daughters. But the work is valuable for showing how the circumstances of one’s parents can have lasting repercussions. This is one way that inequality persists through the generations.