Behaviorism, as a learning theory, can be traced back to Aristotle, whose essay “Memory” focused on association being made between events such as lightning and thunder. Other philosophers that followed Aristotle’s thoughts are Hobbs (1650), Hume (1740), Brown (1820), Bain (1855) and Ebbinghause (1885) (Black, 1995). Pavlov, Watson, Thorndike and Skinner later developed the theory in more detail. Watson is the theorist credited with coining the term "behaviorism".