Later On

A blog written for those whose interests more or less match mine.

Benefits of having siblings

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Interest article by Ruth Williams in the The Scientist:

Siblings sometimes squabble, but they might also be helping each other become more trustworthy, conscientious, and optimistic individuals, according to a report published today (Jan 10) in Science. The study, which looked at people born in Beijing just prior to or just after the introduction of the One-Child Policy, reveals a number of personality differences in adulthood most likely attributable to the presence or absence of siblings.

“They’ve identified this opportunity to establish a causal relationship between being a single child and how one behaves,” said Abigail Barr, a professor of economics at the University of Nottingham in the United Kingdom, who was not involved in the study. “And they’ve used lab-type experiments to do the measurements. It’s really good science.”

The One-Child Policy, introduced in 1979, is a unique natural experiment, said Lisa Cameron, a professor of econometrics and business statistics at Monash University in Melbourne, Australia, who led the study. But it’s also politically controversial. “In China, there is concern about the One-Child Policy generation,” said Cameron. “There have been calls for the abolition of the policy on the basis of [that generation having] poor social skills, but there’s been no research documenting whether it has actually had an impact on people.”

Most research seems to suggest few if any personality effects of being an only child. “Studies done in other countries have found that only children are very much like other children,” said Susan Newman, a social psychologist and author of The Case for The Only Child. “You have hundreds of studies that actually contradict the findings here.” Indeed, even previous studies of only children in China found them to be largely similar to kids with siblings.

However, said Cameron, “If you just compare only children with others, what you end up identifying is the effect of being an only child plus the effect of family background.” That is, parents who choose to have an only child may differ from those who chose to have many, be it in their parenting style, personality, genetics, or other attributes. “You can’t get a clean measure of what it means to be an only child,” she said.

Because the One-Child Policy removes parents’ choice, it eliminates the family-background variable, Cameron explained, so “we can isolate the effect of being an only child.”

The team also controlled for cultural background and, as closely as possible, for age, recruiting people who were born in Beijing no more than 5 years before or after the policy’s introduction and who grew up in the city. . .

Continue reading.

Written by LeisureGuy

18 January 2013 at 10:32 am

Posted in Daily life, Science

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