Driving on a highway in 1977, Belgian experimental psychologist Jozef Nuttin noticed that he preferred license plates containing letters from his own name. In testing this idea, he found that it’s generally so: People prefer letters belonging to their own first and last names over other letters, and this seems to be true across letters and languages.

Nuttin found this so surprising that he withheld his results for seven years before going public. (A colleague at his own university called it “so strange that a down-to-earth researcher will spontaneously think of an artifact.”) But it’s since been replicated in dozens of studies in 15 countries and using four different alphabets. When subjects are asked to name a preference among letters, on average they consistently like the letters in their own name best.

(The reason seems to be related to self-esteem. People prefer things associated with the self — for example, they tend to favor the number reflecting the day of the month on which they were born. People who don’t like themselves tend not to exhibit the name-letter effect.)

(Jozef M. Nuttin Jr., “Narcissism Beyond Gestalt and Awareness: The Name Letter Effect,” European Journal of Social Psychology 15:3 [September 1985], 353-361. See Initial Velocity.)