The document summarizes research on the Pygmalion effect, which is when a teacher's expectations of a student can influence the student's performance. It describes an experiment by Rosenthal and Jacobson where teachers were told some students would bloom academically, though these students were randomly selected. At the end of the school year, those students performed significantly better, showing how teacher expectations can become self-fulfilling prophecies. It notes both verbal and nonverbal cues influence students by communicating expectations to them.