If you have ever spent time with young children, you have probably heard them say the funniest things. While we enjoy the humor children often provide, we can also learn a great deal about development from them.
One of the most important advances in childhood development is the understanding that humans develop physically, morally, and intellectually in a sequential pattern. This little boy will not always believe that he has a sister but his sister does not have a brother. He will grow and mature and so will his thinking.