Recently, a study performed by researchers at the University of Kansas set out to see just how many personal characteristics people can glean from others, just by looking at a picture of their shoes. In the study, 63 subjects were asked to look at over 208 shoes, and guessed certain personality characteristics correctly at a 90% rate. Obviously, the more expensive your shoes are, the more likely you earn a higher salary; the more outrageous your shoes are, the more likely you're an extrovert. But, more surprisingly, the more practical your shoes are, the friendlier you are; ankle boots signal aggressive types; uncomfortable shoes mean a calm personality; the more pristine the shoes, the more self-conscious the person. People who always wear boring shoes were self-described as 'aloof and repressive' and found it difficult to form relationships.