A rapid increase in an infant's vocabulary that usually begins at around 18 is known as
A) a vocabulary spurt.
B) underextension.
C) overextension.
D) telegraphic speech.

Question

Quizplus · Accepted Answer

A rapid increase in an infant's vocabulary that usually begins at around 18 months is known as a vocabulary spurt. This is when the child begins to learn new words at a faster rate and starts putting them together to form phrases and simple sentences. Underextension and overextension refer to errors in language development and telegraphic speech refers to the simplified way in which children initially express themselves.

A Rapid Increase in an Infant's Vocabulary That Usually Begins