AP PSYCHOLOGY

Detailed explanation-1: -By two months, infants begin to develop the smile that communicates their emotional experience of pleasure and contentment. From age two to six months, infants smile more and more often, frequently in response to interaction with a parent or caregiver.

Detailed explanation-2: -A baby’s first social smile usually appears by the end of their second month. That’s one reason why, as a pediatrician, seeing babies and their parents at the 2-month-old checkup is always a great pleasure.

Detailed explanation-3: -At 5-months-old, babies are starting to roll, push up from their tummy onto their elbows, babble, and bring objects to their mouths. They are becoming more sociable and can recognize familiar faces and respond to emotions. Learn More: When Do Babies Start Talking?

Detailed explanation-4: -These early smiles are called “reflex smiles.” Babies start reflex smiling before birth and continue to do so as newborns. These smiles happen randomly and reflex smiling usually stops around 2 months after birth, right around the same time you can expect baby’s first real smile.