42–48 Months

A shift in perspective. Between ages 3 and 5, fueled by the development of the cerebral cortex, your child goes from believing that everyone sees the world the same way to understanding that there can be multiple points of view. In fact, by about age 4, your child will be well aware that her desire to play with that ball now may be in direct conflict with what another child wants.


“Caring for Your Baby and Young Child, Birth to Age 5 (5th Ed)” by the American Academy of Pediatrics.