Baby Week by Week

Small and sweet, yes. But clueless? Not your little one! Read on for fascinating development research about (and simple recommendations for) your baby during these first 52 weeks.
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Newborn Baby Sleeping
Your Brilliant Baby in Week 1: Knowing You from Others
Even at birth, your newborn displays some brilliant behavior: She not only can recognize your face by now, she actually likes it better than ... Read More
Newborn baby diaper change
Your Brilliant Baby in Week 2: Copying Mouth Movements
By his second week, Baby realizes that you and he are very similar beings. Watch as he mirrors the faces you make at him! ... Read More
Newborn Baby sleeping on Mom
Your Brilliant Baby in Week 3: A Discerning Sense of Touch
These days, your newborn is getting a feel for the world around him—literally! Learn how meaningful touch is for your baby right now. ... Read More
Mom holding 4 week old baby
Your Brilliant Baby in Week 4: Identifying Smells, Sounds, and Tastes
Amazingly, your newborn’s abilities to hear, smell, and taste are already hard at work making sense of her environment. Here's why your ... Read More
Newborn Baby Crying
Your Brilliant Baby in Week 5: Crying to Gain Your Trust
Knowing what’s normal about your baby’s tears can help you better meet her needs. This week, learn the why’s of Baby’s cries. ... Read More
Baby playing in ground swing
Your Brilliant Baby in Week 6: Detecting Patterns
Bullseye! Baby is intrigued by high-contrast (especially black and white) designs in his sixth week. Here, learn why patterns matter. ... Read More
Baby laying on back
Your Brilliant Baby in Week 7: Combining Use of Senses
Can you believe that by now, Baby can correctly match an item she's mouthed to an item she sees? Learn more about how your brilliant Baby ... Read More
Smiling Baby
Your Brilliant Baby in Week 8: Emerging Emotions
No more "gassy smiles" for your eight-week-old! By now, he's smiling in response to your own grin. Read why!
Mom smiling, baby smiling
Your Brilliant Baby in Week 9: Cooing and Parentese
Parents across cultures speak to babies in the same soft, sometimes squeaky way you do. Here's how Baby benefits from it in her ninth week. ... Read More
Newborn baby smiling
Your Brilliant Baby in Week 10: The Mystery of Colic
As hard as it is to hear, colicky babies' excessive crying is, well, normal. Here's why, and how you can cope with the mystery of colic. ... Read More
mother and newborn baby
Your Brilliant Baby in Week 11: Raising a Bilingual Child
Lots of families worry whether raising their children around multiple languages will confuse them. Not so, say researchers. Learn why ... Read More
Dad playing with Baby
Your Brilliant Baby in Week 12: Correlating Dads and Diapers
What's the real reason why Baby is so calm with Mom and so fussy with Dad? She smells like food—and comfort. Read what dads can do to gain favor in ... Read More
Sick Baby
Your Brilliant Baby in Week 13: The Myth of Spoiling Baby
Afraid you might spoil Baby if you dotingly attend to her cries? Don't be, say researchers. Here's why comforting your baby when she's sad ... Read More
Baby playing with mobile
Your Brilliant Baby in Week 14: Understanding Cause and Effect
By Baby's fourteenth week, she is beginning to understand cause and effect—that is, that kicking her mobile or yelping for Mommy makes things ... Read More
Smiling Baby
Your Brilliant Baby in Week 15: Evidence of Memory
From one day to the next, your baby is picking up lots of new skills but also recalling ones he's just learned. Read more about what it takes Baby ... Read More
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