Titchener Circles

What: The Titchener Circles illusion (also called the Ebbinghaus Illusion) is one of those classic brain betrayals that really gets you. Hermann Ebbinghaus discovered this back in 1898, although it got its more popular name from Edward Titchener who put it in his textbook in 1901 and everyone just&hellip; ran with that. Even after 125+ years, researchers note that &ldquo;the origin of this…