This Optical Illusion Shows How Old You Really Are

There’s a famous optical illusion called “My Wife and My Mother-in-Law” and what you see has to do with your subconscious bias toward your own age.

The image either shows a young woman looking away, or an old woman looking straight ahead. A new study found that people under 30 saw the young woman the first time they looked at the picture, while people over 30 were more likely to see the old woman.