Thirteen-month-old Samuel has begun to raise the pitch of his voice at the end of a babble. If Samuel is being raised by English-speaking parents, his behaviour may reflect the precursor of his ability to

Question

Quizplus · Accepted Answer

Raising the pitch of the voice at the end of a babble is a precursor to asking questions, as this intonation pattern is typically used in question formation in English.

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