Are 80% of Harvard students first-born children?

This video is from “Justice“, one of the most popular classes in Harvard’s history.

23 minutes into the video, professor Michael Sandel asks students who are first-born to raise their hand — and an eye-popping number do.

Admittedly, this is a less-than-scientific survey but apparently Sandel’s done this many many many times over the years and consistently come up with a similar result.

Of course, there are possible confounds (upper class families who send their kids to Harvard have fewer children on average, etc.) but still quite interesting to ponder.

Join over 151,000 readers. Get a free weekly update via email here.

Related posts:

How do siblings shape your personality?

Is your brother smart? Then you might be crazy.

Are only children missing out?