While reading this information, please keep in mind that all children are unique. There is a wide variation in normal development.
Some children reach developmental milestones earlier than others.
Some reach them later than others. Rarely does a delay in reaching a developmental milestone mean that there is a problem. In most cases, delays turn out to be normal. Remember that premature infants generally reach developmental milestones later than other infants of the same birth age. Parents with any questions or concerns about their children's development should contact their children's health care provider.