The Brain Injury Clinical Research Center at Kennedy Krieger Institute is recruiting healthy young children between the ages of 2 and 3 years old to help us describe normal behavior when interacting with toys so we can better understand the responses of young children with severe brain injuries. During this research study, your child will be asked to look at, listen to, and touch toys. The visit will take about 60 minutes. For more information please contact Rachel Nicholson at 443-923-7987, by email NicholsonR@kennedykrieger.org, or visit KennedyKrieger.org/concussion.