Cognitive Developmental Theory, which consists of many different theories, but I will start off by referring to Piaget’s Cognitive Development Theory. In Piaget’s theory of cognitive development, is a “stage theory” which consists of different stages of development. Within each stage of development, children are put before challenging situations which they must then deal with and overcome through their own abilities. After completing the challenge the child is then able to move on to the next stage of cognitive development.Language is something that we use in everyday lives. Theoretically, language is a “formal system of communication which involves a combination of words and/or symbols, whether written or spoken. It is not necessary for another organism to comprehend the language, for it to actually be a language just that it meets the description given”.