Which is the best example of underextension?
A) Referring to a train as a "choo-choo"
B) Referring to all vehicles having four wheels as "trucks"
C) Using a single-word utterance ("car") rather than telegraphic speech ("let's ride in the car")
D) Referring to the family cat as a "kitty" but not using the same name for any other animal (including other cats)

Question

Quizplus · Accepted Answer

Underextension occurs when a child uses a word in a more limited or narrower sense than its adult meaning. In this case, referring to the family cat as "kitty" but not applying the term to other cats or animals is an example of underextension, as the child is restricting the use of the word to a specific instance rather than its broader category.

Which Is the Best Example of Underextension