The "curse of the second-born child" is real, especially if you're a boy. Doyle and his colleagues found that second-borns (usually boys) are more prone to have a rebellious side compared to their older siblings.
In families that had two or more kids, second-born boys were 20 to 40 percent more likely to receive disciplinary action in school, and enter the criminal justice system, when compared to first-born boys and other siblings. After years of enduring Chinese burns from younger brothers, you now have scientific proof that he's more likely to be a trouble-maker than you.
Researchers examining delinquency looked at data from thousands of families in Florida in the U.S. and in Denmark.
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First-born children often get undivided attention from their parents, while their younger siblings have to share. And, as the family grows, dynamics change. "And the second, later-born children have role models who are slightly irrational two-year-olds, you know, their older siblings", Doyle notes.
"The first-born has role models, who are adults".
"Both the parental investments are different, and the sibling influences probably contribute to these differences we see in the labour market and what we find in delinquency".
Don't worry if you're a second-born child, though-this research doesn't mean you're doomed to a life of crime and mayhem, only that your birth order might just matter a bit more than you think!