Final answer:
The infant using emotional information from her mom's facial expressions or vocal expressions to shape her actions or response to a new situation is an example of social referencing.
Step-by-step explanation:
The infant using emotional information from her mom's facial expressions or vocal expressions to shape her actions or response to a new situation is an example of Social referencing. Social referencing refers to the process of relying on others, typically caregivers, for emotional information when encountering an unfamiliar or ambiguous situation. In this case, the infant is seeking emotional cues from her mom to guide her own behavior. For example, if the mom shows fear or concern in her facial expression, the infant may also respond with fear or caution.