In 1968, Australian psychologist Paul R. Wilson took a visiting Englishman around to five different groups of Sydney students. He introduced the man differently to each group, and when the visitor had left, Wilson asked the students to estimate his height. Results:

  • “Mr. England, a student from Cambridge”: 5 feet 9.8 inches
  • “Mr. England, demonstrator in psychology from Cambridge”: 5 feet 10.39 inches
  • “Mr. England, lecturer in psychology from Cambridge”: 5 feet 10.86 inches
  • “Dr. England, senior lecturer from Cambridge”: 5 feet 11.57 inches
  • “Professor England from Cambridge”: 6 feet 0.32 inches

That’s an increase of 2.5 inches. “Wilson’s experiment suggests that extra inches are available to anyone who achieves increasing degrees of success, on campus or off,” reported Time. “But apparently the success must be of considerable dimension. For even when he was Professor England, the visitor’s estimated height still fell more than half an inch short of his actual height (6 ft. 1 in.).”