
(“If you’re in D.C., you’re closer to New York than you are to Chicago,” Revelle says.) Some people may not fit into any of them. Some people may fit one perfectly, while others are more loosely associated with one of the camps. don’t live in New York City, Los Angeles or Chicago, some people won’t fit neatly into one of the four personality types Revelle says they’re just trait groupings that describe an above-average number of people. While people live across the country, it’s easy to spot high-density areas like New York City, Los Angeles and Chicago, which are each home to far more people than, say, Cleveland or Tallahassee.īut just as plenty of people in the U.S. He likens the result to looking at a population map of the United States. “There are higher densities than you would expect by chance, and that’s what these guys convinced me of,” Revelle says. Northwestern psychology professor William Revelle, a co-author on the paper and a long-time doubter of personality types, was intrigued enough by the results to change his mind. These clusters kept showing up again and again. Role models, finally, have high levels of extraversion, agreeableness and conscientiousness, and comparably low levels of neuroticism. Reserved individuals are fairly stable in all domains except for openness and neuroticism, in which they’re relatively low. Meanwhile, self-centered types score below-average on openness, agreeableness and conscientiousness, but high on extraversion. Most people, Gerlach says, will track closest to the average personality type, which is fairly agreeable and conscientious, quite extraverted and neurotic but not terribly open.
