Final answer:
Infants use emotional regulation to soothe themselves through strategies like sucking their thumb and utilizing reflexes such as crying. The sense of touch also plays a role in helping newborns regulate their emotions.
Step-by-step explanation:
Infants use emotional regulation to soothe themselves by employing various strategies. One common strategy is self-soothing through sucking their thumb, finger, or pacifier.
Additionally, newborns have instinctive behaviors known as reflexes, such as the crying reflex, that help them express their needs and seek comfort.
Furthermore, the sense of touch plays a crucial role in emotional regulation for infants. Soft stroking, cuddling, gentle rocking, and warm baths can have a calming effect on newborns.