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Uses index finger to point, lead, and poke
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Stands with little support
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Climbs up and down the stairs
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Walks holding on to furniture
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Does not control body movements.
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4-month-old babies begin to grasp for grabbing things near the hands.
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Achieves sitting position by pushing up with arms
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Crawls; crawl up the stairs
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Stands alone
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Waves good-bye
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Is able to show distress, excitement, anger, and delight.
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Communicates with different sounds and facial expressions.
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Is more aware of social approval and disapproval.
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May show fear of heights; may be afraid to climb down a chair.
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May show fear of new sounds.
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Expresses delight, happiness, sadness, discomfort, and anger.
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May begin to show fearful behavior as separateness is felt.
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Likes attention and may cry to get it.
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4-month-old babies can put objects in their mouth.
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Can roll from tummy to back
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Likes to bounce when in a standing position
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Is able to stand while supported
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Likes to walk holding caregivers' hands
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May carry spoon to mouth in feeding attempt
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A 3-month-old can lift their head while lying on their tummy.
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Cries deliberately for assistance; also communicates with grunts and facial expressions
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Laughs out loud
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Smiles at self when looking in a mirror.
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Searches for hidden object.
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Finds objects that are totally hidden
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Smiles and coos when caregiver talks to him/her
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Explores toys by grasping, sucking, shaking, and banging.
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Responds appropriately to a few specific words
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Links specific acts or events to other events
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Puts nesting toys together correctly
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Studies objects intently, turning them to see all sides
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Enjoys looking through books with familiar pictures.
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Speaks first recognizable word.
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Likes to look at pictures in a book
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Likes to open containers and look at their contents
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Is comforted by a human face.
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Watches adults' facial expressions closely.
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May form an attachment to one special object.
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Becomes unresponsive if left alone most of waking hours.
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Shows increased pleasure in social interactions.
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Enjoys social aspects of feeding time. Social
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Distinguishes between familiar and unfamiliar adults.
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Enjoys playing with children.
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Has increased drive for independence but senses frightening situations.
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Enjoys playing with own image in mirror
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Fears strange places.
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Expresses anger more dramatically.
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Likes to play games like pat-a-cake.
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Shows interest in play activities of others.
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Likes to say no or shake their head to get a response from caregiver.
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Enjoys music and may mimic movements others make to music.
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Recognizes the difference between being good and being naughty.
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Is more aware of and sensitive to other children.
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Objects to having his or her enjoyable play stopped.
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Begins to develop self-identity and independence.
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Imitates movements of other adults and children.
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Shows increased negativism. May have tantrums.
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Enjoys playing with siblings.
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Likes to practice communication with adults.