Developmental milestones are behaviors or physical skills seen in infants and children as they grow and develop. Rolling over, crawling, walking, and talking are all considered milestones. The milestones and stages of development are different for each age range and can vary within the set development guidelines quite a bit.
There is a normal range in which a child may reach each milestone and still be in development guidelines. When we talk about child development, we often speak of milestones that children hit at certain ages.
A developmental milestone is an ability that is achieved by most children by a certain age. Developmental milestones can involve physical, social, emotional, cognitive, and communication skills such as walking, sharing with others, expressing emotions, recognizing familiar sounds, and talking….