A new study conducted by MIT has found that second-born children... particularly second-born sons... end up being the most troublesome.
And not just for their own family... but society in general.
The study found that second-born sons were 20-40 percent more likely to have behavioral issues in school and have to be disciplined, and eventually end up in the criminal justice system.
One of the key reasons for the behavioral issues came down to lack of attention from parents.
Read more about it here.