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Romalda Bishop Spalding, a graduate of Columbia University, developed her method using principles learned from the eminent neurologist Dr. Samuel T. Orton and her experiences teaching children with language problems at Harvard Children's Hospital and public and private schools. Mary E. North, Ph.D., is director of research and curriculum at Spalding Education International (SEI). She is vice president of the International Multisensory Structured Language Education Council and serves on the executive committee of the Alliance for Accreditation and Certification of Structured Language Education, Inc. SEI is located in Phoenix, Arizona.