The best evidence that there is a critical period for language acquisition is the fact that
A) infants babble sounds that occur in their parents' native language.
B) toddlers maintain a capacity to discriminate language sounds they have never heard.
C) people most easily master the grammar of a second language during childhood.
D) preschoolers typically fail to use proper syntax.

Question

Quizplus · Accepted Answer

The fact that people most easily master the grammar of a second language during childhood is the best evidence that there is a critical period for language acquisition. This suggests that there is a specific window of time during which the brain is primed to learn and understand language. After this critical period, it becomes more difficult to acquire language skills.

The Best Evidence That There Is a Critical Period for Language