Four-year-old Matthew has not yet mastered any of the rules that guide the combination of the words and phrases he uses, and therefore there is little meaning in what he says. Which of the following has Matthew NOT yet mastered?

Question

Quizplus · Accepted Answer

Matthew has not yet mastered grammar, which includes the rules for combining words and phrases in a meaningful way. However, he may have some vocabulary and ability to use symbols and gestures to communicate. It is still considered that he has language, but with limited meaning at this stage of development.

Four-Year-Old Matthew Has Not Yet Mastered Any of the Rules