The "Pygmalion Effect" and the power of positive expectations

There are a lot of studies that shows how teacher's expectations affect in each student. 

Those students that doesn't succeed academicaly are related to teachers who treat them in a different way from the others that have good marks. 

There are four factors that change between this students: 

1. Climate factor: teachers tend to treat best students in a warmer way. 

2. Imput factor: teachers give more material to students that have better marks. 

3. Response opportunity factor: teachers give more opportunities to answer their questions to the students who have better marks. 

4. Feedback: better students are positively reforced more often than the ones who don't have success. 

As teachers, we have to think in how we treat our children and try to give every child the attention that he deserves.