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Having kids at least 2-years apart makes firstborn smarter

November 22, 2011 12:00:00 AM PST
A new study has found that a firstborn child may be smarter if there is at least a two-year age gap between their younger sibling.

The study said parents may spend less time and give less attention to the older child if there's a smaller age gap between kids.

Researchers said there appeared to be no effect on younger siblings.

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