Our Data


Disclaimer: This is our preliminary analysis. We will of course share the more final articles with our families, but first we wanted to give you a peek at what we’re looking at, across all babies in our group, in June 2016.


What can we learn from the recordings?

Object Words: On average, babies heard about 700 object words per day. During the video recordings, they heard about 180 object words per hour.

Babies hear a lot of repetition! Each object word was heard, on average, three to four times per recording.


Speakers: On average, babies heard about five speakers (e.g. mom, brother, toy) per day. During the video recordings, they heard about three per hour.


Babies hear a wide variety of utterances.

Note: When babies start talking, their language environments change!



What about the eyetracking?

At six months, our babies do a better job telling apart unrelated words than related words.

Unrelated words
Our babies were able to tell apart unrelated pairs such as this, nose and bottle.
Related words
Related pairs, such as mouth and nose, were hard for six-month-olds to tell apart!

What kinds of words do we hand-pick from our recordings?

We have tested babies on 700 different pictures selected from the most common object words in home recordings. Some of the most popular object words are ball, blocks, and book!

Here are just a few of our 25+ dog, doggy, and puppy pictures!



And here are some of the more unusual words we've tested: