A Recent Study Examined the Synchronous Relationship Between Maternal Responses

A recent study examined the synchronous relationship between maternal responses and infants. Mothers were separated from their baby, given a task, and as part of the study were selected to receive a positive or negative evaluation. Those with the negative evaluation, experiencing negative emotions, had infants who:

A) smiled more and had a decreased heart rate.
B) displayed similar negative emotions as evidenced by increases in heart rate.
C) were more likely to giggle when reunited with the mother.
D) were likely to seek out an alternate caregiver when reunited with the mother.