1. Jack M. Fletcher, PhD, is a professor of pediatrics at the University of Texas Medical School at Houston. He is a diplomate, American Board of Clinical Neuropsychology, and is principal investigator of several NIH grants concerned with the classification of neurobehavioral disorders of childhood, and with recovery of function in children with brain injury. Address: Jack M. Fletcher, Department of Pediatrics, University of Texas Medical School, 6431 Fannin, Houston, TX 77030.