According to a recent study, babies smile to elicit a smile in return, and they also tend to time the action for maximum effect while trying to smile as little as possible.
Babies may have an ulterior motive when they smile.
According to a recent study, they tend to grin in order to cause a similar reaction in others.
They also appear to time their smiles to maximize the response while, overall, trying to minimize the number of times they actually have to do it themselves.
The study states, “By the time infants reach four months of age both mothers and infants time their smiles in a purposeful, goal-oriented manner. Mothers consistently attempted to maximiz
