http://www.time.com/time/health/article/0,8599,1672715,00.htmlThe importance of birth order has been known—or at least suspected—for years. But increasingly, there's hard evidence of its impact. In June, for example, a group of Norwegian researchers released a study showing that firstborns are generally smarter than any siblings who come along later, enjoying on average a three-point IQ advantage over the next eldest—probably a result of the intellectual boost that comes from mentoring younger siblings and helping them in day-to-day tasks. The second child, in turn, is a point ahead of the third. While three points might not seem like much, the effect can be enormous. Just 2.3 IQ points can correlate to a 15-point difference in sat scores, which makes an even bigger difference when you're an Ivy League applicant with a 690 verbal score going head to head against someone with a 705. "In many families," says psychologist Frank Sulloway, a visiting scholar at the University of California, Berkeley, and the man who has for decades been seen as the U.S.'s leading authority on birth order, "the firstborn is going to get into Harvard and the second-born isn't."
The differences don't stop there. Studies in the Philippines show that later-born siblings tend to be shorter and weigh less than earlier-borns. (Think the slight advantage the 6-ft. 5-in. <196 cm> Peyton Manning has over the 6-ft. 4-in. <193 cm> Eli doesn't help when he's trying to throw over the outstretched arms of a leaping lineman?) Younger siblings are less likely to be vaccinated than older ones, with last-borns getting immunized sometimes at only half the rate of firstborns. Eldest siblings are also disproportionately represented in high-paying professions. Younger siblings, by contrast, are looser cannons, less educated and less strapping, perhaps, but statistically likelier to live the exhilarating life of an artist or a comedian, an adventurer, entrepreneur, GI or firefighter. And middle children? Well, they can be a puzzle—even to researchers.
For families, none of this comes as a surprise. There are few extended clans that can't point to the firstborn, with the heir-apparent bearing, who makes the best grades, keeps the other kids in line and, when Mom and Dad grow old, winds up as caretaker and executor too. There are few that can't point to the lost-in-the-thickets middle-born or the wild-child last-born.
Indeed, to hear families tell it, the birth-order effect may only be getting stronger. In the past, girls were usually knocked out of the running for the job and college perks their place in the family should have accorded them. In most other ways, however, there was little to distinguish a first-, second- or third-born sister from a first-, second- or third-born brother. Now, with college and careers more equally available, the remaining differences have largely melted away.
"There are stereotypes out there about birth order, and very often those stereotypes are spot-on," says Delroy Paulhus, a professor of psychology at the University of British Columbia in Vancouver. "I think this is one of those cases in which people just figured things out on their own."
Printer-friendly format
Email this thread to a friend
Bookmark this thread
(1000+ posts)
Send PM |
Profile |
Ignore
