Did you know that monkeys might see the world differently when it comes to counting? Scientists found out something fascinating. They showed monkeys two sets of objects—one where the items are connected, and one where they are not. Humans often underestimate the number of items when they're connected. But, monkeys did the opposite! They thought the connected items were actually more. Isn't that crazy?

This discovery is part of a bigger study into how different species judge relative amounts. Humans and many other animals have a special rule called the ratio effect. This rule helps us tell how much more or less one set is compared to another. But, sometimes, our minds play tricks on us. These tricks are called illusions. One such trick is called the connectedness illusion. It makes us think there are fewer items when they're connected.

But hold on, monkeys didn't fall for this trick. They liked the connected items more! This shows how interesting and varied the way animals perceive quantities can be. Next time you see a group of items, think about how your brain might be fooling you—or maybe not, if you're a monkey!

ANIMAL BEHAVIOR

Monkeys and the Reverse Connectedness Illusion

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