Am I not understanding something?

You say

It is known that children who are regularly told they are smart and talented are much quicker at difficult tasks than the types who, instead of assessing their intellectual abilities, get an evaluation of the activity: ¡You did a good job!.

amd yet, earlier, you say

We often tell our children that they are the best always and in everything. First we praise and then the child encounters a situation in which his real abilities are revealed

and

Unfortunately, this scenario does not lead people to develop intellectual abilities

Okay, as for the general message, it is excellent and important, so 'bravo'.

PS: What is a braind?