size constancy

Size constancy is our brain's ability to perceive an object as having the same size regardless of the distance from us. When an object is farther away, it projects a smaller image onto our eyes, but our brain recognizes it as the same size, using cues like depth and context. This helps us maintain a stable view of the world, so we don't see objects shrinking or growing just because we move closer or farther away. Essentially, size constancy ensures consistent perception of object size despite changes in viewing conditions.