You like to think that you’re an island and that nothing gets to you. You think nothing will ever get under your skin. You’re a bad dude, (maybe even bad enough to save the president), and nothing will make you change your hard-ass ways.

But guess what? Your kid did.

David Kerr, a researcher at Oregon State University, found that bad dudes are a little less bad once their babies comes sliding out. They polled a bunch of bad dudes between the ages of 12 and 31 – and tracked their criminal habits, as well as their usage of tobacco, alcohol and marijuana.

Those researchers found that those bad dudes would calm down a teensy bit when they became fathers in their teens and early 20s, but a relative bit more when they became fathers in their late 20s and early 30s.

The study can be found on the Journal of Marriage and Family.

Story originally seen on Articles About Men, sauced below.