Development in Infants
Newborns often exhibit smiles within the first three days of their lives, especially while sleeping. However these early smiles are spontaneous and are not a response to outside stimulation. These early smiles are referred to as "reflex smiles." Between 6 and 8 weeks, most babies begin to exhibit "social smiles", meaning the baby will smile at his/her caregivers or in response to stimuli. Most babies laugh between 3 and 4 months.
Read more about this topic: Smile
Famous quotes containing the words development and/or infants:
“The American has dwindled into an Odd Fellow—one who may be known by the development of his organ of gregariousness.”
—Henry David Thoreau (1817–1862)
“But most thro’ midnight streets I hear
How the youthful Harlots curse
Blasts the new-born Infants tear
And blights with plagues the Marriage hearse”
—William Blake (1757–1827)