Muller-Lyer Illusion

Definition

The Muller-Lyer illusion is a visual illusion where two lines of the same length appear to be of different lengths because of the orientation of arrow-like ends attached to them.

Related terms

Visual Perception:

The ability to interpret information from visible light reaching the eyes.

Optical Illusion:

An experience of seeming to see something that does not exist or that is other than it appears.

Perceptual Set:

A predisposition, or readiness, to perceive something in a particular way based on expectations and assumptions.