Nan Bernstein Ratner is Professor, Department of Hearing and Speech Sciences, University of Maryland, College Park. She is a Fellow and Honors recipient of the American Speech, Language and Hearing Association (ASHA). In 2014, she was made a Fellow of the American Association for the Advancement of Science (AAAS). Her primary areas of research are fluency development and disorder (stuttering), psycholinguistics, and the role of adult input and interaction in child language development. The author of numerous research articles, chapters, and edited texts, she is the co-author of the recently-released A Handbook on Stuttering (7th ed) with the late Oliver Bloodstein and Shelley B. Brundage, as well as The Development of Language (7th ed) and Psycholinguistics (2nd ed.), both with Jean Berko Gleason. She is a Board Certified Specialist in Child Language. In 2006, Professor Bernstein Ratner received the Distinguished Researcher award from the International Fluency Association, for which she has served as President. In 2016, Dr. Bernstein Ratner was named Professional of the Year by the National Stuttering Association. For more information on Dr. Bernstein Ratner, click here.