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Firstborn Children May Have an Advantage

There may be a reason firstborn children have higher IQs and earn more money.
01:45 | 10/22/2013

Transcript for Firstborn Children May Have an Advantage

It goes on sale next month. A new study out today stirring up an age old debate about siblings. Were you and your brothers and sisters treated the same by mom and dad? Is it entirely different to be... See More
This transcript has been automatically generated and may not be 100% accurate.
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