For 3- to 4-year-olds who hear English at home

You will receive a $10 Amazon.com gift card for participating in this study. To be eligible for the gift card your child must be in the age range for this study, you need to submit a valid consent statement, and we need to see that there is a child with you. But we will send a gift card even if you do not finish the whole study or we are not able to use your child's data! Gift cards will be sent via e-mail within one week of study completion. You need to be a United States resident to receive/use the Amazon.com giftcard.

Your child will play a game that involves matching pictures of alien “wuggles” based on their emotions.

We are interested in how children categorize emotions when the emotions are labeled ("she feels happy"). Labels help children categorize objects, and we think that labels will also help children categorize emotions. If labels help children categorize emotions, this would suggest that parents could talk about emotions with their children in order to help their children learn!