Melissa reads in a parenting magazine that the average age at which children first walk on their own is twelve months old, and most children walk within the range of nine to seventeen months old. The article is discussing the concept of

Developmental Norms are a set of defined standards that can be of use to realize if a child is progressing normally for their age. Even though every kid is different, there is a range of normal development that has been deeply studied by professionals in the field. If a child is not meeting the milestones common for their age, they should be taken to a pediatrician for further studying.

These norms include several types of milestones in children's development, like social milestones, language milestones, and movement milestones just to name a few.

Examples of common development milestones are:

Turning their head to familiar voices at 1-month-old.
Begining to develop a social smile at 3-month-old.
Walks two or three steps without support at 1-year-old.

In conclusion, Developmental Norms are very useful to keep track of the development of a child.

To learn more about developmental milestones, read here:

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