There are two kinds of self-fulfilling prophecies. They are broadly defined by wiki as follows: The Pygmalion effect , or Rosenthal effect, is the phenomenon in which the greater the expectation placed upon people, the better they perform. On the other hand is the Golem effect , in which low expectations lead to a decrease in performance. In ancient Greek mythology, Pygmalion fell in love with one of his sculptures, which then came to life. The theme was in the main stray of many English literary works during the victorian era. One of which is George Bernard Shaw's play titled "Pygmalion" from which Rosenthal effect gets its name. In Shaw's play, the protagonist, a professor of phonetics Henry Higgins makes a bet that he can train a bedraggled Cockney flower girl, Eliza Doolittle, to pass for a duchess at an ambassador's garden party by teaching her to assume a veneer of gentility, the most important element of which, he believes, is impeccable speech. (The pl...