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A sixteen-month-old baby can walk comfortably without holding on and say five or six words. They can readily follow simple instructions such as “bring,” “take,” “take it” and “give.” At this stage babies also enjoy objecting as part of their developing personality.
During a medical examination the baby usually cries and objects to the doctor; they do not want to show a part of their body or be examined. At home they may sometimes act rebelliously toward their parents and disagree over food. When playing with peers, they may sometimes have difficulty sharing toys. These are physiological developmental characteristics of a healthy child.
A sixteen-month-old baby can readily crawl up stairs. In a game of building a tower with blocks, they can easily stack two blocks.