Our irises primarily operate to help us see, but they respond to more than just light; our pupils also dilate when we see someone we're attracted to. ... Humans judge potential mates with larger pupils as more attractivebecause it indicates their mutual interest in us. Why are eyes so at...
In fact, Savin-Williams said, the pupils dilate slightly in response to any exciting or interesting stimulus, including a loved one's face or a beautiful piece of art. The dilation is a sign that the autonomic nervous system — the system that controls involuntary actions like pulse and breat...
Pupils dilate for many reasons from sexual attraction to more severe causes such as an eye or brain injury. Pupil dilation also occurs due to…