Phrenology is dead and for good reason. This was a Victorian pseudoscience which claimed that one could tell personality traits and intellectual capacity from the size and shape of one’s skull. It was used alongside eugenics to justify colonialism and slavery, to separate humans into superior and inferior races, and it’s been wholly discredited. However, today through dynamic research in the fields of genetics, biology, and psychology, we’re learning that certain aspects of the body do in fact tell us something about ourselves, mostly tendencies and behavioral traits.
For instance, last October researchers in the UK found that those who had a longer ring finger than pointer finger tended to be more promiscuous, while those with a longer pointer than ring finger tended to be more monogamous. A longer ring finger indicated receiving more testosterone at a critical point of development inside the