42-48 Months

A new world of fantasy. Are imaginary playmates something to discourage or should you play along? At this age, these figments of your child’s imagination are a sign of her budding creativity and emotional health, rather than an indication that she isn’t making bona fide friends, or she lacks social skills. So, go ahead, welcome that companion only your child can see to the dinner table or along to the park.

Reference:

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