Give us an informative speech about 250 worlds about the famous education experiment of Rosental Effect.

The Rosenthal Effect, also known as the Pygmalion Effect, is a psychological phenomenon in which higher expectations lead to an increase in performance. The most famous application of this effect was conducted in an educational setting, known as the Rosenthal-Jacobson study. In this study, teachers were falsely informed that certain students were "spurters" and had exceptional potential for academic growth. As a result, the teachers unknowingly treated these students differently, which led to an actual increase in their academic performance. This experiment highlights the importance of expectations and their impact on performance, and has significant implications in the field of education.