Number Word Comparison

For 3- to 9-year olds who are native English speakers or who speak English on a regular basis and with typical hearing.

In this study your child will help some animals who love collecting human things like coins, bags, and forks! Your child will listen as two animals say how many objects they were able to find. Your child will decide which animal has more by clicking on the winning animal.

Number words can be relatively simple (ex. "nine") or complex (ex. "nine hundred billion"). We are interested in how children learn about the structure of more complex number words. For example, do children pay attention to the first number said (ex. "nine" in "nine hundred billion") or the largest number said (ex. "billion" in "nine hundred billion")? Understanding how children learn about complex number words will help scientists and teachers design new and potentially more effective math education practices.

20 minutes

Within 5 business days of participating in this study, we will email you a $5 Amazon Gift Card (U.S.). To be eligible for the gift card: 1) your child must be in the age range for this study, 2) you must submit a valid consent video, 3) we need to see that there is a child with you, and 4) you may only be compensated for the first completed session per child. You are still eligible for compensation if you withdraw your session recording at the end of the game.