When Adults Who Are Speaking to Infants Change the Pitch

question 248

Multiple Choice

When adults who are speaking to infants change the pitch and rhythm in their speech, they are altering their __________.

• A) syntax
• B) grammar
• C) morphemes
• D) intonation

---

Definitions:

Basic Emotions

A set of universal emotions that include happiness, sadness, fear, disgust, anger, and surprise.

Neurotransmitter

A chemical substance that transmits nervous impulses across a synapse from one nerve cell to another.

Facial Expressions

Facial expressions are configurations of facial movements that convey emotions, intentions, or social information, and are a fundamental aspect of human non-verbal communication.

Startle Reflex

An involuntary response to a sudden or unexpected stimulus, exemplified by the body jerking or flinching.