Everyday Health on MSN

Does birth order really affect your personality?

Birth order theory is a concept in family dynamics psychology that posits sibling position may influence personality traits.
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6 Definitive Traits of a Middle Child, According to Psychologists

There are lots of things that are better when they fall right in the middle: a balanced diet, the firmness of your mattress and a not-too-hot, not-too-cold day. But when it comes to sibling birth ...