The story
The illusion was popularized in the English-speaking world by Edward B. Titchener in a 1901 psychology textbook.
Etymology from Wiktionary, CC BY-SA 4.0.
Titchener circles
Today it means: Synonym of Ebbinghaus illusion. Full definition →
Today it means: Synonym of Ebbinghaus illusion. Full definition →
The illusion was popularized in the English-speaking world by Edward B. Titchener in a 1901 psychology textbook.
Etymology from Wiktionary, CC BY-SA 4.0.