If you were asked to draw a picture of your grandparents’ living room from memory, could you do it? For most people, certain details are easy to visualize: “There’s a piano in the corner, a palm by ...

Can you do 3D puzzles...without using your hands? Our visual-spatial intelligence test assesses your ability to mentally manipulate 3D objects, a skill that has practical significance in everyday life ...

Optical illusions are a treat for visually genius minds. These visual illusions are excellent at assessing and examining the workings of the human brain. Researchers around the world incorporate ...