One of the reasons we called our blog "Spanglish Baby," is because most kids are going to go through the stage of mixing languages. When they are first learning to speak, they've got these two languages that they are constantly hearing. They are still learning how to combine those words and make them each stick to whatever language it is supposed to go. It is a learning process. Once the children grow older, if they are still doing it, that's when parents need to be -- maybe not concerned, but motivated -- to find a way to give them more formal instruction in each language. Have them read more or participate more in academics in each language to make sure that they can speak those languages when they are supposed to. The actual mixing of two languages, the term is called "code switching." Code switching is really only able to be done by people who are completely bilingual. It's by being able to automatically go from one language to another seamlessly, almost without thinking about it. I can go from Spanish to English. That can only be done when you have a complete mastery of both languages. When children are making up words, that means that they don't have a complete mastery of both languages. That is when we can help them out.