“There’s this idea that young people are just more likely to have more valuable ideas,” says Benjamin Jones, a professor of strategy at the Kellogg School.

But is this notion accurate?

“If you look at age and great achievement in the sciences in general, it doesn’t peak in the twenties,” he says. “It’s more middle-aged.” Even Nobel Prize winners are having their breakthrough successes later and later in life, Jones found in earlier research. Are the startups of Silicon Valley really an exception?

In a new study, Jones, along with Javier Miranda of the U.S. Census Bureau and MIT's Pierre Azoulay and J. Daniel Kim, use an expansive dataset to tackle that question. The researchers find that, contrary to popular thinking, the best entrepreneurs tend to be middle-aged. Among the very fastest-growing new tech companies, the average founder was 45 at the time of founding. Furthermore, a given 50-year-old entrepreneur is nearly twice as likely to have a runaway success as a 30-year-old.

Author: Pierre Azoulay, Benjamin F. Jones, J. Daniel Kim and Javier Miranda