In one study, researchers had 48 pairs of unacquainted, opposite-sex undergrads spend two minutes at each of the following tasks: 1) gazing at their partner's eyes, 2) gazing at their partner’s hands, and 3) counting how many times their partner blinked.When both pairs were doing the eye-gazing task at the same time — meaning they were looking at each other — they were far likely to report feelings of affection than when they were doing any other task. Hall and Chong Xing published research that suggests there are five different styles of flirting.
In that study, Henningsen asked 101 female and 99 male students to write out a hypothetical flirty conversation between a man and a woman, then identify the motivations for the things they said.
In a 2000 analysis of several of these studies, University of Texas psychologists Martie G. Buss offered several explanations for this finding, including that men are raised to see more sex in their environments while women are brought up to be more modest, but psychologists still haven't quite nailed down a perfect explanation for their observations.
According to a 2011 study led by University of British Columbia psychologist Jessica Tracy, heterosexual men and women diverge greatly in the facial expressions they fancy.
Once again, 20-year-old men approached women in the streets of France and asked for their number.
Half the time, it was a sunny day out; half the time it was cloudy.