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Ask Doctor Universe

Why do we get jealousy?

Asked by Hailey, 10, Ontario

Dear Hailey,

Cats love attention, but we don’t get jealous like humans do. It’s one of those emotions that set human beings apart from other creatures in the animal kingdom. But I can’t imagine it’s the most pleasant.

The poet William Shakespeare once called jealousy a green-eyed monster. Still, it’s an emotion that can help you navigate the world.

To learn more about it, I met up with my friend Craig Parks. He’s a psychology professor at Washington State University who studies how humans tick.

Humans have a whole history of emotions. Parks said one theory is that...

 

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