Previous research shows that men, whose ring finger is longer than their index finger (on their right hand), experienced a surge of testosterone while in their mother’s womb.
A lot of masculine traits such as risk taking, aggression, and athletic skills have been linked to such differences in finger length (also called 2D:4D digit ratio).
New research shows that men with longer ring fingers compared to their index fingers are also more likely to confront a romantic rival when jealous.
Modern day palm reading? Not really. Just science exploring how heighten levels of testosterone influence physiological traits as well as aggressive behavior.
