What will happen in the study?

This study involves three visits over the course of about 7 months. Each visit will last about 3 hours each. Here are some of the things that will happen in this study:

Children and teens will:

• Complete a questionnaire about your feelings, relationship with your parents, and your health
• Complete tasks which include listening to different sounds, looking at checkerboard images, and doing movements with your fingers
• Be placed in a machine called an MRI to view your brain. The machine is like a giant tube which is open at both ends. You will be in that tube for one-and-a-half hours. Pillows will be used to keep your head still. We will take several breaks, but you will need to stay in the tube during these breaks.
• Be tested to see how their body reacts when things change, like the temperature, vibrations and pressure on the body.
• Provide a urine sample to test for drugs. Your doctor and parent will be informed if the test result is positive.
• Complete a pregnancy test if you are a sexually active female. Your doctor and parent will be informed if the test result is positive

Parents will complete a series of questionnaires during each visit that ask about your feelings, your relationship with your child, your health, your child’s overall health.