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Linda Acredolo, Ph.D., and Susan Goodwyn, Ph.D., both psychology professors, conducted their pioneering scientific research on the language and cognitive benefits of Baby Signing for the National Institutes of Health. They have shared their award-winning findings through national media, including appearances on "Dateline" and "Oprah." Dr. Acredolo is at the University of California, Davis. Dr. Goodwyn teaches at California State University, Stanislaus.