The latest optical illusion to go viral involves counting black dots across a grid of diagonal lines. And yes, this one really will make your head hurt. What you've undoubtedly noticed is that ...

An optical illusion shared on Facebook challenged users to count scattered dots. (Facebook/Minion Quotes) (Also read: Optical illusion: Only super-focused eyes can spot the hidden feather in this ...

Below it are several black dots scattered randomly across the page. And at the bottom, a bold statement dares viewers: “Only for Geniuses.” The challenge is deceptively simple—count the ...

Each category corresponds to a dot color. To count each class, researchers can click on each object in the image to place the dot. DotDotGoose tallies the number of dots by class as they’re placed.

The post features a seemingly simple image — black dots arranged in rows on a white background — but it’s anything but ordinary. At the top, bold text asks: “How many dots do you see!?” ...

Subitizing means to instantly see how many without counting. Fostering this skill is becoming more common in schools. Credit: Getty Images Little kids are looking at a lot of dots these days. This ...

This watch, the Lexon E8, might just help that problem, if only partly. See, you tell the time by counting the dots. You don’t even need to count to 10. The only thing you really have to remember is ...