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At eight weeks after birth, a baby will be making great strides in his development. Many babies' developmental stages follow a fairly predictable timeline. However, use milestones as guidelines---not hard, fast rules.
Weight
At eight weeks, a baby boy will weigh, on average, 11 pounds. A baby girl should weigh approximately 10 1/2 pounds.
Height
At two months, boys in the 50th percentile (in other words, taller than 50 percent of boys and shorter than the other 50 percent of boys) will be 23 inches. Girls in the 50th percentile will be 22 1/2 inches.
Eyesight
At eight weeks, a baby's eyesight will have developed enough to focus on and follow objects. Infants especially love and recognize faces, whether in person or in photographs. Objects in the distance, however, are out of focus.
Hearing
By two months, a baby can distinguish among familiar voices and sounds. He or she will also acknowledge sounds by turning toward them and purposely looking for the source.
Social Skills
At eight weeks of age, an infant will smile in response to stimuli such as familiar faces or voices. A baby begins making speech-like sounds, especially repeating syllables containing one back consonant ("k", "g", or "ng") and one back vowel ("oo", "oh", or "ah"). A baby at this age will also establish eye contact.
Considerations
Although current practices teach parents to put infants on their backs to sleep, babies can get a chance to build muscles in their backs if they are put on their stomachs when awake. Every child develops at a different rate, so don't panic if your child doesn't meet a milestone at the average age. However, if you do have concerns about your child's development, consult a pediatrician.
Source:
Your 2-month-old's development: Week 1
Milestone Chart: 1 to 6 Months
Resource:
Your Baby's Development Week by Week
Determine Special Needs of Your Child
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