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Infant in a striped onesie does a plank position on a wood floor.

Updated on Nov. 24, 2025

5 minute read

Is Crawling Important?

Emily Oster, PhD

Child drinking at water fountain
In the news

Updated on Nov. 20, 2025

9 minute read

Is There Too Much Fluoride in Drinking Water?

Emily Oster, PhD

Twins standing outdoors.

Updated on Nov. 12, 2025

2 minute read

Do Children Behave Differently for Caregivers Than Parents?

Emily Oster, PhD

A baby laughing with his mother.

Updated on Nov. 5, 2025

3 minute read

What’s the Best Way to Interact With My Baby?

Emily Oster, PhD

baby sitting with toys around

Updated on Nov. 5, 2025

3 minute read

Do Bilingual Children Speak Later?

Jennifer Shonkoff

A baby pulls themself up to stand at a bench.

Updated on Oct. 22, 2025

2 minute read

Should I Worry if My Baby Isn't Walking?

Emily Oster, PhD

A baby rests face down on a fuzzy blanket during tummy time.

Updated on Oct. 17, 2025

2 minute read

Does My Baby Really Need Two Hours of Tummy Time Per Day?

Emily Oster, PhD

A hospital-style baby blanket stretched out.

Updated on Oct. 16, 2025

3 minute read

Is It Dangerous to Swaddle My Baby Too Much?

Emily Oster, PhD

A baby sitting on a parent's lap.

Updated on Oct. 14, 2025

3 minute read

Am I Hurting My Baby by Sitting Them Up?

Adam Davis, MD

A baby crawling.

Updated on Sep. 24, 2025

2 minute read

Is There a Relationship Between Crawling and Reading?

Emily Oster, PhD

A small toddler holds a pink sippy cup and licks the top of it while sitting in a stroller

Updated on Jul. 10, 2025

5 minute read

Is It OK to Use Sippy Cups?

Emily Oster, PhD

Doctor weighing child

Updated on May 31, 2025

10 minute read

Finding Dr. Right

Krupa Playforth, MD

Young toddler eating fruit puree in a pouch.

Updated on May 30, 2025

2 minute read

Is It Bad to Give My Kid Pouches?

Emily Oster, PhD

Bottom half of a kid seen with xylophone and other toys

Updated on May 9, 2025

3 minute read

What Are the “Right” Toys for Development?

Emily Oster, PhD

A judgemental person holding a magnifying glass looks on, horrified.

Updated on Apr. 1, 2025

2 minute read

My Relative Thinks My Baby Is Autistic. Am I Missing Signs?

Emily Oster, PhD

Multicolored paper speech bubbles hanging from yarn across a yellow background.

Updated on Apr. 1, 2025

2 minute read

Should We Speak to Our Child in Multiple Languages?

Emily Oster, PhD