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Alfred Adler showed how birth order shapes personality

Alfred Adler argued that a child's place among siblings, first, middle or youngest, influences personality, extending psychology beyond the parent-child bond.

Alfred Adler
Alfred Adler · 1870–1937
Person
Alfred Adler
Lived
1870–1937
Field
Individual psychology
From
Austrian

The story

Alfred Adler was born in 1870 in Rudolfsheim, on the western edge of Vienna, the second of seven children of a Jewish grain merchant of Hungarian origin and his wife. His family life left a deep mark. He grew up in a strong rivalry with his older brother Sigmund, believed that his mother preferred his brother, and as a small child was confined by rickets while his brother ran and played. When Alfred was about three, a younger brother died of diphtheria in the bed next to him.

Such experiences may have sharpened his interest in a question every parent asks: why do children raised in the same family grow up with such different personalities? Adler's answer was that siblings do not really share the same environment. The oldest child grows up in a family with younger siblings, the middle child with both older and younger ones, and the youngest only with older ones. The position each child holds in what he called the family constellation shapes how that child sees the world.

In writings from 1908 onward he sketched how this might work. A firstborn enjoys the full attention of new parents until a second child arrives and the firstborn feels dethroned. Youngest children risk being overindulged, which can leave them less able to empathise with others. Middle children experience neither dethronement nor overindulgence, and may be most likely to succeed, but also to rebel and to feel squeezed out. Adler also distinguished a child's actual birth position from the psychological role the child takes on: a second child might, for example, behave like a firstborn.

Adler did not produce scientific proof for these specific predictions, and later research has been mixed. Large modern studies have found that earlier-born children score slightly higher on average on intelligence tests but have found little or no robust effect of birth order on personality traits. Writers such as Frank Sulloway, in his 1996 book Born to Rebel, have nonetheless continued to explore the idea.

The lasting value of Adler's hypothesis lay elsewhere. It extended psychology's attention beyond Freud's focus on parents to the influence of brothers and sisters. Adlerian therapists still use it not as a fixed rule but as a way to explore how a person's experience among siblings shaped what Adler called their style of life, the habitual way they approach friendship, love and work.

Why it matters

Adler's focus on siblings and family position opened a new way of understanding how families shape who we become, and it remains one of the most widely discussed ideas in popular psychology.

About Alfred Adler

Viennese physician who broke with Freud to found individual psychology, coined the “inferiority complex” and opened the world’s first child guidance clinics.

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Alfred Adler
1870–1937 · Individual psychology
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Sources

Another act of tikkun olam. This is part of tikkun olam, the Jewish idea of repairing the world, and every one of us can add to it.

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