Rosenthal's Law, also known as the "Pygmalion Effect," suggests that higher expectations lead to improved performance in individuals. This principle is often observed in educational settings, where teachers' beliefs about their students can significantly influence the students' achievements. When educators expect more from their students, those students are more likely to excel. The law is named after Robert Rosenthal, a psychologist who conducted experiments demonstrating this effect. His research showed that when teachers were led to believe certain students had greater potential, those students performed better academically. This highlights the powerful impact of expectations on learning and development.