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 ...

Participants donning thick-lensed stereo glasses grab virtual shapes in front of them, gesturing as if the boxes were real. The subjects place their heads in chin rests to keep their heads from moving ...

As the old saying goes, beauty is in the eye of the beholder. But while we can appreciate that others might hold different opinions of objects we see, not many people know that factors beyond our ...