Why we need to study child and adoloescent development?

How people grow and learn is important to know because you can know what stage of development they are in and if they are developing at a proper pace or are behind. Children don't develop all at once and they go through stages of development. If you are trying to teach a child something before they are ready they will have a hard time learning it and become frustrated. This is not their fault because they aren't ready because the brain develops in stages. This is one reason why you need to study child development. Just knowing how your own child develops as a parent can help you understand your child and know what they can or can't do.