Robert Rosenthal is an American psychologist best known for his work in the field of social psychology. He is particularly recognized for his research on the Pygmalion effect, which demonstrates how higher expectations can lead to improved performance in individuals. His studies have had a significant impact on education and management practices. In addition to his research, Rosenthal has contributed to the understanding of nonverbal communication and the importance of self-fulfilling prophecies. His work emphasizes how beliefs and expectations can shape behavior, influencing various aspects of human interaction and development.