Thirteen-month-old Olaf has begun to raise the pitch of his voice at the end of a babble. If Olaf is being raised by English-speaking parents, his behavior may reflect the precursor of his ability to
A) ask a question.
B) produce infant-directed speech.
C) make a declarative statement.
D) coo.

Question

Quizplus · Accepted Answer

Raising the pitch at the end of a babble is a precursor to the intonation pattern used in asking questions in English, indicating Olaf is beginning to understand and mimic the speech patterns he hears from his English-speaking parents.

Thirteen-Month-Old Olaf Has Begun to Raise the Pitch of His