MULLER-LYER EXPERIMENT
KALAI NILA R, 2233630
MR. MADALAIMUTHU
22 NOVEMBER 2022
INTRODUCTION:
Franz Carl Müller - Lyer created the Müller - Lyer Illusion (1857 - 1916). He was a
sociologist and psychiatrist from Germany. In 1889, he first published the deception in the
physiology section of Archiv für Anatomie und Physiologie.
In optical illusion, a basic line picture's primary element appears warped because of other
aspects of the image. These are additionally referred to as "geometrical - optical illusions."
The following three methods explain how the Müller-Lyer illusion operates:
• "Misapplied Size Consistency Scaling," where the arrowheads activate the area of the visual
system that processes depth information in retinal images. As a result, the line with the
outward-pointing arrowheads appears to be farther away, making it appear longer. This
justification
• "Conflicting cues" - The arrowheads are interpreted as adding to the length of the lines
because of how they are perceived. the line's lengthy, mostly straight shape with arrowheads
The line appears longer when viewed from the outside in. This justification was provided by
Day (1989).
• "Confusion" - our perception is influenced by the spacing between the arrowheads.
Because of this, the distance between the tips of the arrowheads at the line's opposite ends is
less for the line with arrowheads pointing inward than it is for the other line with arrowheads
pointing outward, creating the illusion. Sekuler and Erlebacher provided this justification
(1971).
Support is provided for the incorrect size constancy scaling idea.
As an illustration, even if one is aware that the lines are identical due to the Müller-Lyer
illusion Despite one's perception of their length, they appear to be different lengths because
