Baby Billy calls his favourite blanket a "blankie." When he sees other blankets in the house, however, he does not refer to them as a "blankie" because he uses that name only for his favourite blanket.This is an example of

Question

Quizplus · Accepted Answer

This scenario describes underextension, which occurs when a child applies a word too narrowly or restricts its usage to a specific example or instance. Baby Billy uses the term "blankie" exclusively for his favourite blanket and does not apply it to other blankets in the house.

Baby Billy Calls His Favourite Blanket a "Blankie