Oct 15, 2006
By: Alvaro Fernandez
Let’s try this fun Muller-Lyer Illusion — Which of the 2 circles surrounded by other circles is bigger?
Are you sure? Would you mind using a tape measure?
Here’s a link to a neuropsychological explanation.
PS: Enjoy these 50 brain teasers to test your cognitive ability. Free, and fun for adults of any age!