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Is Birth Order Destiny? - MSN Encarta

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In other words, the eldest child in a given family should be expected to exhibit certain traits, the youngest child certain other traits, and so on. </p> <p>In fact, some people put such stock in birth order that they credit it--and the sibling rivalry it can lead to--for changing history. </p></div> </div> <div class="Section"> <div class="SectionBody"><p>Of course, other people credit astrology, the study of the heavenly bodies and their influence on human behavior, for doing the same thing. </p> <p>So is birth order like astrology? Or does it have actual, verifiable scientific merit? </p> <p>I lean toward the latter--at least to a certain degree.</p> <p>After all, as one of five kids, I'd like to know how many of my failures in life I can responsibly blame on my older brother, and whether this entitles me to a better present from him this year at Christmas.</p></div> </div> <div class="Section"> <div class="SectionBody"><p>And I'm far from the first to wonder such things. In my family alone, I'm probably the fourth, as my younger siblings are a little quicker on the uptake than I am.</p> <p>But seriously.</p> <p>People first started studying birth order in earnest more than 130 years ago, when a scholar named <a href="/web/20090212184635/http://encarta.msn.com/encyclopedia_761558485/Galton_Sir_Francis.html">Sir Francis Galton</a>&nbsp;wrote a book about 180 prominent scientists. Of the 99 men whose family data he had, almost half were first-born or only sons, suggesting that high achievement was linked with birth order.</p> <p>But the observation--that high achievers were very often oldest children--has been repeated by others over the years, using arguably better data.</p></div> </div> <div class="Section"> <div class="InlineModule_R" style="width:165;"><div class="Module_3"><div class="Title_3">Also on Encarta</div> <table cellpadding="0" cellspacing="0" border="0" class="BulletItem"><tr><td valign="top" class="DeptBullet">&#149;</td><td valign="top" class="BulletItem_3"><a href="/web/20090212184635/http://encarta.msn.com/encyclopedia_761570026_6/Intelligence.html#p89">Birth order and intelligence</a></td></tr></table> <table cellpadding="0" cellspacing="0" border="0" class="BulletItem"><tr><td valign="top" class="DeptBullet">&#149;</td><td valign="top" class="BulletItem_3"><a href="/web/20090212184635/http://encarta.msn.com/encyclopedia_761560245/Eugenics.html">Sir Francis Galton's now-discredited "science" of eugenics</a></td></tr></table> <table cellpadding="0" cellspacing="0" border="0" class="BulletItem"><tr><td valign="top" class="DeptBullet">&#149;</td><td valign="top" class="BulletItem_3"><a href="/web/20090212184635/http://encarta.msn.com/encyclopedia_761552380/Astrology.html">Have scientists rejected astrology?</a></td></tr></table> </div> </div> <div class="SectionBody"><p>For example, in <em><a href="https://web.archive.org/web/20090212184635/http://shopping.msn.com/results/shp/?text=The%20Birth%20Order%20Book%3A%20Why%20You%20Are%20the%20Way%20You%20Are,ptnrid=8,ptnrdata=24003">The Birth Order Book: Why You Are the Way You Are</a></em> (2004), Dr. Kevin Leman notes that 21 of 23 of the first Americans in space were first-born males or only children. And space is not the only high office where oldest boys seem to have an advantage. More than half of United States&nbsp;presidents have been first-borns or first-born boys. While this might not seem so dramatic, it's a pretty significant finding historically, because families used to be bigger than they are today (the average American family has 1.86 children, according to the 2000 U.S. census). </p> <p>In addition to getting more than their share of trips to outer space and presidential photo ops, older children also generally have higher IQs than younger ones. Within individual families, this isn't necessarily the case. (So if my older brother is reading, he can wipe the smirk off his face.) But across families, older kids generally test higher.</p></div> </div> <div class="Section"> <div class="SectionBody">Researchers have noted that the more kids a family has, the lower each child's individual IQ tends to be. They give a few reasons for this: <ul> <li>Parents only have so much time, attention, and money</li> <li>The more kids they have, the more these things are divided</li> <li>First-borns initially get the entire parental-time pie--and assuming the parents' time and energy&nbsp;are well applied, they benefit statistically</li></ul></div> </div> <div class="Section"> <div class="SectionBody"><p>What's more, the ratio of grown-ups to kids decreases with each new baby. So the younger ones are surrounded by more juvenile language on average than the older kids.</p> <p>Some researchers think parental attention is the key to personality/birth-order differences. In his book <a href="https://web.archive.org/web/20090212184635/http://shopping.msn.com/prices/shp/?itemId=2727344,stext=Born%20to%20Rebel,ptnrId=8,ptnrData=24003"><em>Born to Rebel</em></a>, psychologist Frank Sulloway says competition for Mom and Dad's attention is the thing that really shapes our personalities and, in fact, has shaped history. </p> <p>Birth order, he argues, forces us into niches. We adapt our personalities as part of our strategy to curry favor with Mom and Dad. Older siblings might generally be a little brainier. But younger ones tend to become rebels. Sulloway studied political activists and, after adjusting for family size and social class, found&nbsp;that later-born activists were more radical than their first-born peers.</p></div> </div> <div class="Section"> <div class="SectionBody"><p>The upshot of his book is that sibling competition for parental attention can affect society as a whole in times of revolution. Thomas Jefferson, Karl Marx, and Fidel Castro were all younger siblings, for example. </p> <p>As compelling as this all is, it's also something we should probably take with a grain of salt. After all, there are other things that happen to us in life besides the addition of siblings to our families. A parent can die; a hurricane can leave us homeless; we can contract a life-threatening disease. Any one of these things will probably have more of an effect on our personalities than the presence of siblings.</p></div> </div> <div class="Section"> <div class="SectionBody"><p>And, birth order aside, people are born with certain temperaments that can affect how they respond to others. This is where birth order tends to be a bit astrology-like. Just as with horoscopes that&nbsp;are often&nbsp;general enough to apply to everyone, we tend to seize on the characteristics that fit our observations and overlook the ones that don't.</p> <p>A 2002 study bore this out. After interviewing 535 undergraduates, researchers concluded that personality differences related to birth order were "folklore," although IQ and achievement differences were widely supported by research.</p> <p>So yes: Birth order matters, somewhat. But so do other factors. So I hereby forgive my brother for being born first and getting more of Mom and Dad's attention when he was the only baby. 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