The Mental Rotation Task measures visuospatial transformation—your ability to mentally manipulate 3D objects. You'll see pairs of 3D shapes and must decide if they're the same (just rotated) or different (mirror images).
The objects are identical, just rotated in 3D space. No matter how much they're rotated, they're still the same shape.
One object is a mirror image (enantiomorph) of the other. They cannot be rotated to match—they're fundamentally different.
Your primary score will be your mental rotation speed measured in degrees per second. This is calculated from the linear relationship between your reaction time and the angle of rotation—a finding from the famous 1971 Shepard & Metzler study that proves we “rotate” images in our minds!
Scientific Background: Based on the seminal 1971 Shepard & Metzler study published in Science. This task provides compelling evidence for analog mental representations—that our minds manipulate images in a way analogous to physical rotation.