Kuhel is a behaviorist. in the context of language development, he is most likely to believe that language is:

Behaviorist studies claim that language acquisition is a result of the influence that the environment exercises. The main learning mechanism experienced by children is that they link meanings with words.

When the new knowledge is applied correctly, a positive reinforcement should be used to enhance the understanding of the child on the words and phrases he/she has used. For example, when a child says apple and an adult (mother, father) responds smiling, or clapping, the child will consider this a rewarding outcome.