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If you happen to have a son who has an older sibling, you’re in for a wild ride! According to researchers, second-born children, particularly sons, are more likely to end up in jail, become juvenile delinquents or get suspended.

According to a study led by economist Joseph Doyle, the ‘curse’ of the second child may be more than just an old wives’ tale. The research revealed that second-born children, and more specifically sons, have a 25% to 40% increased chance of getting into serious trouble at school or with the law, when compared to the first-born child in their family. Ouch!

The researchers delved through a huge amount of data, which came from two different areas – Florida and Denmark. And when it came to crime and delinquency, the numbers were damning.

“I find the results to be remarkable that the second-born children, compared to their older siblings, are much more likely to end up in prison, much more likely to get suspended in school, enter juvenile delinquency,” Joseph Doyle told NPR.

“Across all these outcomes, we’re getting 25 to 40% increases in the likelihood of these outcomes just by comparing a second-born sibling compared to a first-born.”

So why is there such a difference in behaviour between first and second-born brothers?

Joseph says the first-born son has adult role models. But the same can’t be said for the next child.

“The second, later-born children have role models who are slightly irrational two-year-olds, you know, their older siblings. Both the parental investments are different, and the sibling influences probably contribute to these differences we see in labour market and what we find in delinquency. It’s just very difficult to separate those two things because they happen at the same time.”

There has been previous research indicating that first-born children do better at school, have higher IQs and often earn more money, but this study was the first that uncovered how naughty second-born kids are.

Have you found this to be true in your family? Share your comments below, and you’ll be in the running for our monthly Rewards prizes!

  • To some degree I have found this with my son, he is a little naughty at times and can get up to mischief. That being said, half the time I would trust him more than his older sister as she is generally the one who lies and steals things, but my son is very loving and happy to please.

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  • Certainly didn’t work out that way for me. I am the second born and my sister was the one who acted out. She would go out late at night and not come home till the next morning. She fell pregnant at 16 but wasn’t sure who the father was. When the baby was just 3 days old, she took off for a couple of nights with someone else and left the baby behind. When she got home, she wouldn’t change nappies or bath her. I ended up doing this and I was only 12.

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  • That is very interesting, my 2 yr old is quite a handful and people often tell me “oh yeah the second child”
    I have often wondered if there was any truth to this statement as it seems to be the case in my family as my older brother, my nephew and my 2 year old all seem to fit the pattern… even my partner falls in the category!

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  • My second born child is my son and he’s now 19 years old. And he is a true gem ! He is extremely , loving, generous and loyal, although he can be cheeky at times and loves to teases. He never got suspended and always did well at school; scoring high grades and always excellent behaviour and effort.

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  • I have got two boys and yep, the second one is my cheeky boundry pushing child. But he has a heart of gold, very caring…I don’t ever seeing any of my boys be naughty to the point they end up in jail. They are within normal naughty of part of growing up.

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  • So interesting! Never thought of it that way before. I can definitely agree my second born girl is definitely more happy, cheeky and acts closer to her age compared to her older sibling who has always been more mature. Definitely makes sense when i think about it that way and their role models!

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  • Interestingly, my trouble maker is my third born – but because one of his older brothers died at birth, he’s effectively been raised as the second born. I wonder what that means….

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  • My second born is my son and he’s a gem ! Now at age 19 he was never suspended at school nor showed ever delinquent behaviour. He’s very empathic and generous and has a beautiful gentle streak. He was always the most neat and tidy from my kids and always kept his room organised (unlike his sisters). He’s smart, works hard and has the best money saving skills 🙂

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  • My second born is my only son, born on Halloween and the tallest of all of us.
    He is the reason my hair started going gray early.
    From sneaking out of the loungeroom window to play in the early morning snow, to running with a bunch of delinquents, to giving me my first grand child.
    And he’s only 22.

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  • Fingers crossed – about to have my second

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  • My son is the second born in our family and has an older sister. He is not a trouble maker and has so far never been (he is 19 years old now). But I have read some studies from the year 2017 that seems to point this way. According to the study both the parental investments are different, and the sibling influences probably contribute to these differences we see in the labor market and what we find in delinquency. It’s just very difficult to separate those two things because they happen at the same time.

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  • Our third is more the trouble maker lol

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  • Not true in our family 🙂

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  • Absolutely. The second born aren’t laden with as much responsibility and aren’t helicoptered like the first.

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  • My middle kid is definitely more mischievous. But he’s not technically my second, because my second died at birth.

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  • Nah I’ve not found it to be much diff. Except for in my family growing up!

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  • Definitely true in my family, I was the second child

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  • I’m the second child, and while not exactly a trouble maker, I did push the boundaries (not as much as my older sister though) and still to this day I am the one my mother puts the most expectations on, and therefore the one who can disappoint the most.

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  • I’m second born black sheep of family, but because I’m Christian and have adult daughters with special needs and choose to not follow the crowd. All my siblings were trouble makers mostly my 3 brothers

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  • Having had 4 children, the youngest was the most mischievous in my brood, but my second was always the most placid and still is to this day. The first was always striving and the third would have been the one getting into trouble except as a girl, she didn’t follow suit to your study.

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