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During her training in anthropology, Dorsa Amir, now at Duke University, became fascinated with the Müller-Lyer illusion. The illusion is simple: one long horizontal line is flanked by arrowheads on ...

(This is Part 2 of a two-part blog series.) Take a look below at the famous Müller-Lyer illusion. Every student of psychology knows that the two horizontal lines are actually the same length, even ...

Hence, the illusion is said to be “encapsulated,” insulated from the influence of higher-order knowledge (that the two lines are actually of the same length). In short, because of encapsulation, the ...