Prof. dr. Mariska KRet and dr. Eliska Prochazkova have won the ignobel prize for their study into attraction! The ignobels are awarded each year for studies that are unique, that make you smile and think.
In a blind date setting at a festival, Mariska and Eliska tested which non-verbal signals could predict attraction. They found that people are generally not good at determining whether the other person is attracted to them. Furthermore, body language, eye-contact, and smiling all did not predict attraction. However, they found that heart rate synchronization between two partners does predict attraction.
In the video below, you can see the set-up of the blind date setting