To play this video you need to enable JavaScript. And I’m Georgie. For most parents, their baby’s first word is ... How does the child know that you're talking about the cup in front of ...

Watch the full experiment with Professor Ben Ambridge in the video below. Have you ever noticed that without even really thinking about it most people talk to babies in a high-pitched sing-song voice?

Ms. Rachel has saved the sanity of parents by teaching ABCs, 123s and first words with her baby learning videos on YouTube.