Maturation has nothing to do with the learning of languages and we are listening to people here who are not doing a good job on their explanations. If they do not speak more than one or two languages, they are not the best people for explaining this kind of topic. I am teaching six languages at the same time in Mexico and all this information has become obsolete. Repetition has nothing to do with learning but logic is what I use for teaching all these six languages.Please,do not learn at school