look what I found, a research in a peer reviewed paper. from a journal with 3.973 Impact factor no less. (that's high)

It says that 4% (one in twenty five) is not the child who they think they are. One in twenty five.

It means that, by proportion, at least one kid per class of a departmentalized school in USA comes from an affair never disclosed.

It also talks about another interesting research.

Twenty nine percent of the blood sent to a lab associated to the American Association of Blood Banks for fatherhood testing results as the man not being the father.

Now consider: each child raised until 18 is a estimated costs of $212,300 at lowest (by 2015 money) and at highest 450,000 American dollars. (Not considering the cost of opportunity or wasted time)

What do you guys think of this? state your pill and gender please.

EDIT: oh look, another study, even bigger and more solid. It says the average is "only" 3.3%. from 1 in 25, to 1 in 33 blokes. Nice.