![Side view of happy young African man playing with his little baby and smiling while lying in bed.](https://cdn.mos.cms.futurecdn.net/Ce4Aja6JD45Ai38jBLLoae-320-80.jpg)
Babies Understand More About the World Than Once Thought
A revolution in the tools and techniques developmental psychologists use to investigate kids' knowledge and capabilities is rewriting what we know about how and when children understand their world.