We study how children reason about people, objects, words and numbers. This study investigates how young children learn and understand number. There will be two sessions, one week apart. 

In the first session, we will play some games involving number in different ways. For example, there will be a bucket of toys and we will ask the child to give us a certain number of them. In another game, we will show the child some cards with objects on them and ask the child to quickly guess how many objects are on the card. In the second session we will play a number board game and a counting game as training to help improve the child’s understanding of number. The child will then play the games from the first session again to show the effectiveness of the training games.

The session lasts about 30 minutes, but we schedule appointments for an hour to accommodate playing and filling out paperwork. The child gets to pick out a prize to take home (a stuffed animal, slinky, rubber duck etc.), and we will give the parent $5 as travel compensation. If other children come along, a researcher will play with them during the study and they get to pick out prizes too.

We are located on Harvard’s campus and provide parking. Also, we can be reached easily from subway and bus routes.  We usually run this study Monday through Friday, 10:00am-5:00pm. For directions, see

We run studies by appointment only.  To schedule a time, please call, text, or email!

Call: 617-384-7930

Text: 617-299-6486