Why first-born children are smarter

First-borns around the world, it turns out, have higher IQ’s.

According to a new study “those born earlier perform better in school” and, it’s because of the parents. Parents simply go easy on their later-born kids, according to data analyzed by economists V. Joseph Hotz and Juan Pantano, and as a result, first-born children tend to receive both the best parenting and the best grades.


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