My mother says I'm "reverting" because I watch MLP FiM.

Well, that is an unfounded theory based souly on the fact that she herself doesn't like it, and is trying to explain herself in what she believes to be a scientific way. Even if 你 are shy and don't like talking to people, that has nothing to do with being child-like. 你 are simply 更多 intrapersonal. Being intrapersonal is simply its own form of intelligence and depending on how 你 use it can be put to great use. There's plenty of scientific proof for that. Give me some scientific proof that being intrapersonal indicates reversion into a child-like state, and that MLP:FiM could cause it (which it can't), then I'll believe that.