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8 science-backed signs you're smarter than average

Mike Nudelman,Drake Baer,Alyson ShontellAug 25, 2015, 20:21 IST

What makes someone smart?

Scientists have been investigating that question for decades, and the research suggests that everything from your choice of pet to your height can influence your intelligence.

Check out the graphic below to see what other factors play a role in shaping your intelligence.

Mike Nudelman/Business Insider

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