The Müller-Lyer illusion cannot be explained by any known perceptual principles.

Question

Quizplus · Accepted Answer

The Müller-Lyer illusion can be explained by known perceptual principles, such as the Ebbinghaus illusion and the Ponzo illusion. One explanation for the illusion is that the inward-pointing arrowheads at the ends of the top line make it appear shorter than the bottom line with outward-pointing arrowheads. However, the illusion is still not fully understood and other explanations have also been proposed.

The Müller-Lyer Illusion Cannot Be Explained by Any Known Perceptual