The "mirror test" consists of painting a red spot on the baby's forehead or nose, large enough so that he/she/they can see it easily, and place it in front of a mirror. If the child tries to touch the reflex, it means that he/she/they do not understand that the image is his/her/their own. But if /he/she/they try to clean or touch the spot on her face, it's because he/she/they already aware of her image.