A common belief is that U.S.-born tech founders of technology companies tend to be young. We found that about 1 percent were teenagers when they started their firms. More than twice as many were older than age fifty than were younger than twenty-five. Many, in fact, were in their sixties when they founded their startups. The vast majority of U.S.-born tech founders were older than twenty-five. The average and median…
This is very relevant research. I actually agree with the findings based on the people I know who have started technology companies.
I don't think it applies to the kind of people that YC is targeting - young, mobile, no dependents, able to live on very little $'s a year or the technology segment which is consumer web startups.