Attention deficit hyperactivity disorder, or ADHD, is one of the most common disorders in children, often disrupting not only the early years but also adulthood. Yet, the genes that underlie it remain unknown. To accelerate understanding the genetics of this disorder, Louis V. Gerstner, Jr. has pledged $4.6 million through the Gerstner Family Foundation to launch a bold new program focused on genomic studies of ADHD.