First-born siblings engage in leadership and teaching roles, whereas second-born siblings
are more likely to imitate, follow and be a learner. The natural power differences that result from the age difference between siblings mean that two children are likely to have different experiences in the
family. For instance, second-born children have the benefit of learning from an older
sibling, but first-borns do not, sometimes leading to precocious development for second-borns
in some areas.