Milestones enable parents and physicians to monitor a baby's learning, behavior, and development. While each child develops differently, some differences may indicate a slight delay and others may be a cause for greater concern. The following milestones provide important guidelines for tracking healthy development from four months to three years of age.
- Watches faces with interest and follows moving objects
- Recognizes familiar objects and people; smiles at the sound of your voice
- Begins to develop a social smile-
- Turns head toward sounds
- Responds to other people's emotions
- Enjoys face-to-face play; can find partially hidden objects
- Explores with hands and mouth; struggles for out of reach objects
- Responds to own name
- Uses voice to express joy and displeasure; babbles chains of sounds
- Enjoys imitating people; tries to imitate sounds
- Enjoys simple social games, such as “gonna get you!”
- Explores objects; finds hidden objects
- Responds to “no;” uses simple gestures, such as pointing to an object
- Babbles with changes in tone; may use single words (“dada,”“mama,” “Uh-oh!”)
- Turns to person speaking when his/her name is called.
- Imitates behavior of others; is excited about company of other children
- Understands several words
- Finds deeply hidden objects; points to named pictures and objects
- Begins to sort by shapes and colors; begins simple make-believe play
- Recognizes names of familiar people and objects; follows simple instructions
- Combines two words to communicate with others, such as “more cookie?”
- Expresses affection openly and has a wide range of emotions
- Makes mechanical toys work; plays make-believe
- Sorts objects by shape and color, matches objects to pictures
- Follows a 2- or 3-part command; uses simple phrases to communicate with others, such as “go outside, swing?”
- Uses pronouns (I, you, me) and some plurals (cars, dogs)
- Cooperates with other children; is increasingly inventive in fantasy play
- Names some colors; understands concepts of counting and time
- Speaks in sentences of five to six words
- Tells stories; speaks clearly enough for strangers to understand
- Follows three-part commands; understands "same" and "different"
- Wants to be like his/her friends; likes to sing, dance, and act
- Is able to distinguish fantasy from reality
- Shows increased independence
- Can count 10 or more objects and correctly name at least four colors
- Speaks in sentences of more than five words; tells longer stories






