Ebbinghaus illusion
Ilusión de Ebbinghaus
- Date
- c. 1890 · confidence low
- Place
- Berlin, Germany
- Credited to
- Hermann Ebbinghaus
- Field
- Life & health
What was discovered
An optical illusion of relative size perception in which a circle surrounded by large circles appears smaller than an identical one surrounded by small circles, discovered by German psychologist Hermann Ebbinghaus.
Also called Titchener circles, since Edward Titchener popularized it in the English-speaking world in a 1901 textbook.
What it led to
- Studies on visual size perception and context
- Comparisons with the Delboeuf illusion in perceptual research