Theo is 10 months old. His parents overhear him talking to himself in his crib. His language resembles adult speech in sound, with words rising and falling. This is called
A) echolalia.
B) intonation.
C) turn-taking.
D) vocabulary development.

Question

Quizplus · Accepted Answer

Intonation refers to the rise and fall of voice pitch across phrases and sentences, which is what Theo's parents are observing. This aspect of language development is evident even before children use actual words, indicating their emerging understanding of the sound patterns of their native language.

Theo Is 10 Months Old