Nominative determinism is the hypothesis that people tend to gravitate towards areas of work that fit their names. The term was first used in the magazine New Scientist in 1994, after the magazine's humorous Feedback column noted several studies carried out by researchers with remarkably fitting surnames. These included a book on polar explorations by Daniel Snowman and an article on urology by researchers named Splatt and Weedon. These and other examples led to light-hearted speculation that some sort of psychological effect was at work. Since the term appeared, nominative determinism has been an irregularly recurring topic in New Scientist, as readers continue to submit examples. Nominative determinism differs from the related concept aptronym, and its synonyms aptonym, namephreak, and Perfect Fit Last Name, in that it focusses on causality. "Aptronym" merely means the name is fitting, without saying anything about why it has come to fit.
The idea that people are drawn to professions that fit their name was suggested by psychologist Carl Jung, citing as an example Sigmund Freud who studied pleasure and whose surname means "joy". A few recent empirical studies have indicated that certain professions are disproportionately represented by people with appropriate surnames (and sometimes given names), though the methods of these studies have been challenged. One explanation for nominative determinism is implicit egotism, which states that humans have an unconscious preference for things they associate with themselves. An alternative explanation is genetic: a person might be named Smith or Taylor because that was originally their occupation, and they would pass on their genes to their descendants, including an aptitude for activities involving strength in the case of Smith, or dexterity in the case of Taylor.
Before people could gravitate towards areas of work that matched their names, many people were given names that matched their area of work. The way people are named has changed over time. In pre-urban times people were only known by a single name – for example, the Anglo-Saxon name Beornheard. Single names were chosen for their meaning or given as nicknames. In England it was only after the Norman conquest that surnames were added, although there were a few earlier bynames that were not hereditary, such as Edmund Ironside. Surnames were created to fit the person, mostly from patronyms (e.g., John son of William becomes John Williamson), occupational descriptions (e.g., John Carpenter), character or traits (e.g., John Long), or location (e.g., John from Acton became John Acton). Names were not initially hereditary; only by the mid-14th century did they gradually become so. Surnames relating to trades or craft were the first to become hereditary, as the craft often persisted within the family for generations. The appropriateness of occupational names has decreased over time, because tradesmen did not always follow their fathers: an early example from the 14th century is "Roger Carpenter the pepperer".