The pygmalion effect reffered as the effect on someone's performances because of the expectations of another towards him/her. By having high expectations in someone, there's better chance he/she will attain, same for the contrary: if you expect the worst, you'll get the worst. > The Pygmalion effect suggests our reality is negotiable and can be manipulated by others—on purpose or by accident. What we achieve, how we think, how we act, and how we perceive our capabilities can be influenced by the expectations of those around > https://fs.blog/2021/05/the-pygmalion-effect/ This has effects on management and teaching.