Inferring temperament from birth order is largely pseudoscience. Wikipedia has a good summary: http://en.wikipedia.org/wiki/Birth_order http://en.wikipedia.org/

Inferring temperament from birth order is largely pseudoscience. Wikipedia has a good summary: http://en.wikipedia.org/wiki/Birth_order http://en.wikipedia.org/wiki/Birth_order "Birth order is defined as a person's rank by age among his or her siblings. Birth order is often believed to have a profound and lasting effect on psychological development. This assertion has been repeatedly challenged by researchers, yet birth order continues to have a strong presence in pop psychology and popular culture."