1. Education and Human Development, Education and Brain Research Laboratory, Vanderbilt University, Nashville, Tennessee.
2. Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee.
3. Department of Radiology and Radiological Sciences, Vanderbilt Institute for Imaging Sciences, Vanderbilt University, Nashville, Tennessee.
4. Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland.
5. Haskins Laboratories, New Haven, Connecticut.
6. Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, Maryland.
7. Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut.
8. F.M. Kirby Research Center for Functional Brain Imaging at the Kennedy Krieger Institute, Baltimore, Maryland.