Wondering if your sweetheart reciprocates? Look into her eyes. Studies show that our pupils dilate when we feel strong emotions. Psychologist Bruno Laeng, of the University of Oslo, explains how scientists are using “pupillometry” and what pupil diameter suggests about mental activity.
Meet the Producer
About Flora Lichtman@flichtman
Flora Lichtman was the host of the podcast Every Little Thing. She’s a former Science Friday multimedia producer.