Born to Create

Birth order shapes our lives in surprising ways—from achievement to rebellion, from conformity to creativity
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by Jill Neimark

 

MAY/JUNE 2002—Psychologist Frank Sulloway’s landmark book, Born to Rebel (Pantheon, 1996), put a twist on the familiar nature-nurture debate—and was both applauded and decried. By applying Darwinian natural selection to the family unit, Sulloway concluded that individual creativity was linked to birth order.

Now a visiting professor at the University of California-Berkeley’s Institute of Personality and Social Research, Sulloway maintains that certain personality traits are influenced by birth order, and that siblings compete for niches within the family to receive attention and approval. Sulloway measured what are known as the Big Five personality traits: conscientiousness, agreeableness, openness, extraversion, and neuroticism. He found that siblings strategically used these aspects of personality to their advantage within the family.

According to Sulloway, firstborns tend to identify more closely with their parents and to be highly conscientious. They are less agreeable and more assertive than their younger siblings, in part because being older and bigger gives them dominance. Laterborns need to be more agreeable and sociable to flourish in the family system. They usually branch out their interests to compete in a different niche, making them more open to alternative experiences in which they will not be compared to older siblings. Only children, who have no sibling rivals, tend to be intermediate on many traits and are free to occupy whatever niche they want. Says Sulloway: “Only children are the most unpredictable group.”

Firstborns win more Nobel Prizes, and laterborns start more revolutions, Sulloway says. “Firstborns and laterborns are creative in different ways,” he says. “Firstborns are high on any kind of creativity or intellectual achievement within the system. Context matters. If you ask people if they see themselves as deep thinkers, firstborns more often will score higher. They try to fulfill parental expectations to achieve in conventional, academic ways. Younger siblings are much more likely to accept radical innovations in science and social thought. Younger siblings were the earliest backers of the Protestant Reformation and the Enlightenment.”

Sulloway thinks that when individuals shape history, their birth-order personalities are congruent with the times. “A radical revolution will bring out traits that we see in those individuals within their families. History taps the sentiments that we’ve grown up with, in our families.” In particular, Sulloway says, prominent women in history tend to be laterborn, even lastborn—the rebels of the family. They have “transgressed into a man’s world because they were not willing to sit there and do what women were generally supposed to do.”

Sulloway’s early research relied largely on historical data, but the dramatic effects he found in history have not shown up as strikingly in self-reported personality tests. So Sulloway devised a personality test in which individuals rate themselves as well as a sibling. “When you measure personality in that manner, dramatic birth-order differences emerge,” he says.

“The effects are marked within a given family.” Using these new tests, Sulloway has collected data from more than two hundred thousand people. (To participate, go to www.outofservice.com and take either the Star Wars Twin Test or the Big Five Personality Test. You’ll be scored and your results added to the database.)

Though we can’t replicate Sulloway’s tests here, he adapted some questions into a quiz measuring the Big Five. Take it and see how you fare. For each question, rate both yourself and then a sibling—or, if you’re an only child, rate a friend.


Relative Rating

I see myself/my sibling as someone who …

1 …tends to be disorganized
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

2 …perseveres until the task is finished
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

3 …can be cold and aloof
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

4 …likes to cooperate with others
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

5 …has an assertive personality
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

6 …is fun-loving, makes people laugh
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

7 …is a deep thinker
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

8 ….is conventional, traditional
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

9 …can be tense
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

10 …has high self-esteem
a) Agree strongly
b) Agree moderately
c) Neutral
d) Disagree moderately
e) Disagree strongly

Results: Remember, these are only probabilities and tendencies: we are all unique individuals with our own complex histories. Laterborns tend to agree on questions 1, 4, and 6; and disagree on questions 2, 3, 5, 6, 7, 8, and 9. (Some of these questions were designed to make the responses seem less obvious.) Specifically, firstborns tend to be organized, to persevere until a task is finished, to be cold and aloof, to be assertive, to consider themselves deep thinkers, conventional, and tense. All these traits come from their status in the family as ‘surrogates’ or stand-ins for their parents, reflecting their parents’ values. Their tension comes from anxiety about potential loss of status. In contrast, laterborns tend to be less organized, to persevere less, to be cooperative, friendly, agreeable, fun-loving, unconventional, and to have low self-esteem. In the latter case, that’s because they are self-conscious and measure themselves against their more mature and ‘competent’ siblings.

Originally published in Science & Spirit magazine.