Normally, a person's pupils naturally widen (or dilate) in low-light environments to allow more light into the eye. However, in a new study, researchers reported that a person's pupils also dilate ...

His gaze softens as he draws closer to you. With one hand around your waist and the other cradling your jaw, he pulls you in. You look into his eyes, and notice his pupils have grown large and hungry.

New research by Zachary Estes, Professor of Marketing at Bayes Business School (formerly Cass), as well as academics from the University of Amsterdam, Netherlands, and the University of California at ...