The **NICHD Neonatal Research Network's Follow-Up Study** looks at babies born extremely small or early, to see how they grow and develop. These babies are usually born weighing less than 2 pounds. The study checks them at **22-26 months old** to see how they are doing in terms of movement, thinking, speaking, and behavior. They also gather information about their family and medical history to understand what might affect their development. This includes looking at things like their home environment and any special help they receive. The study helps figure out which early life factors might affect a child's development. A part of this study also checks healthy babies to make sure the tests are accurate. This study is important because it helps doctors understand how to better care for babies who are born very early or very small.

• The study involves babies born at **less than 27 weeks** of pregnancy.
• Babies will be checked at **22-26 months** old.
• No direct treatment is given, but it helps improve future care.