Watch an exclusive video about John Manning and his theories
YOUR fingers are colossal tattletales. According to evolutionary psychologist John Manning, who has spent years researching the secrets they betray, your digits reveal all sorts of things, from your sexuality to whether you are socially disadvantaged or likely to suffer a heart attack. They even, as the legend goes, give away the size of a man’s penis.
The key, Manning says in The Finger Book, is the 2:4 ratio: that is, the relative lengths of your index finger (the second digit) and your ring finger (the fourth). Men tend to have relatively long ring fingers, whereas the two are often the…
