Every year infants, children and adults are diagnosed with one of the hundreds of devastating and little understood developmental disorders. Developmental disorders are perplexing medical mysteries which can only be solved with continued and dedicated research. For this reason, the National Institutes of Child Health and Human Development has funded two Brain and Tissue Banks. The goal of both Banks is to advance meaningful research on developmental disorders. Many of these disorders have their origins at birth, and are manifested early in life, but others do not occur until later in life. The Banks serve the critical purpose of collecting, preserving and distributing human tissues to qualified scientific investigators who are dedicated to the improved understanding, care and treatment of developmental disorders.