Preschoolers' language skills allow them to communicate verbs and nouns, but they tend to live in the present tense—the present moment. Your child is concerned with the way they feel RIGHT NOW. For example, not only do they not have language for delayed gratification, but they may also struggle to understand the difference between not having a cookie at the moment versus never having cookies again. This "timeless" grammar, in combination with black-and-white thinking, can mean that when you say, "No cookies until your room is clean," the child's brain may process...