A new study has declared that a child who is the second-born in the
family is more likely to be a troublemaker, which may make him a
criminal in the long run.
Second-born sons are more likely to be suspended from school, become
juvenile delinquents and go to prison, according to the new study by MIT
economist, Joseph Doyle.
After examining tons of data, Doyle and colleagues Sanni Breining, David
Figlio, Krzys Karbownik and Jeffrey Roth found that second-born
children, particularly sons, have a 25 percent to 40 percent increased
likelihood of being troublemakers at school or with police when compared
to first-born children in the same family.
The researchers came to this conclusion after examining thousands of
family data sets of brothers from both Florida and Denmark, according to
the report.
While researchers have previously suggested that first-born children
have higher IQs, perform better in school and earn more money, this new
report is among the first major studies to make a compelling case that
second-born children are more at risk to become troublemakers.
Doyle said second-born sons could be more prone to trouble-making than
older siblings because parents are often more invested in their
first-born’s upbringing.
Once a family’s second child arrives, parents tend to be less vigilant, he said.
“The firstborn has role models, who are adults. And the second,
later-born children have role models who are slightly irrational
two-year-olds, you know, their older siblings,” Doyle said.
“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.
“It’s just very difficult to separate those two things because they happen at the same time.”
According to the researchers, treating the second child differently from
the first could have a long-term impact on their behavioural
development.
Although not every family will have a troublemaker as their second
child, the report suggests that keeping an eye on their children could
be beneficial overall.
Noting that second-born boys are more likely to rebel and cause
mischief, the researchers warn that second-born boys are 20 to 40 per
cent more likely to be disciplined in school and commit crimes —
particularly violent crimes — compared to first-born boys.
They also typically get less attention from their mothers than first-borns did.
The 50-page report states: “In addition to the fact that first-borns
experience undivided attention until the arrival of the second-born, we
discovered that the arrival of the second-born child has the potential
to extend the early-childhood parental investment in the first-born
child.”
