 The Pygmalion Effect, or Rosenthal Effect, is a psychological phenomenon in which high expectations lead to improved performance in a given area. The effect is named for the Greek myth of Pygmalion, the sculptor who fell so much in love with the perfectly beautiful statue he created that the statue came to life. The psychologists Robert Rosenthal and Lenore Jacobson, in their book Pygmalion in the Classroom, borrowed something of the myth by advancing the idea that teachers' expectations of their students affect the student's performance. According to the Pygmalion Effect, the targets of the expectations internalize their positive labels, and those with positive labels succeed accordingly. Golem Effect is a similar process works in the opposite direction in the case of low expectations.