Heather Graham Pozzessere (born March 15, 1953) is a best-selling American writer, who writes primarily romance novels.
 She also writes under her maiden name Heather Graham as well as the pen name Shannon Drake.
Robert T. Westbrook (born December 24, 1945, New York City) is an American writer.
 He was born to columnist Sheilah Graham five years after the death of her lover F. Scott Fitzgerald.
 Graham claimed Robert’s biological father was Trevor Cresswell Lawrence Westbrook, a British businessman whom she divorced in 1946.
Language deprivation is associated with the lack of linguistic stimuli that are necessary for the language acquisition processes in an individual, usually in a very impoverished environment.
 Experiments involving language deprivation are very scarce due to the ethical controversy associated with it.
 Roger Shattuck, an American writer, called language-deprivation research "The Forbidden Experiment" because it required the deprivation of a normal human.
 Similarly, experiments were performed by depriving animals of social stimuli to examine psychosis.
 Although there has been no formal experimentation on this topic there are several cases of language deprivation.
 The combined research on these cases has furthered the research in the critical period hypothesis in language acquisition.
Jared Spool is an American writer, researcher, speaker, educator, and an expert on the subjects of usability, software, design, and research.
 He is the founding principal of User Interface Engineering, a research, training, and consulting firm specializing in website and product usability, and the largest usability research organization of its kind in the world.
 He is also an amateur magician.
 Spool attended Niskayuna High School in Niskayuna, NY.
Jack Nusan Porter is an American writer, sociologist, human rights, and social activist, and former treasurer and vice-president of the International Association of Genocide Scholars.
 He is a former assistant professor of social science at Boston University and a former research associate at Harvard's Ukrainian Research Institute.
 He is presently (2017-2020) a research associate at the Davis Center for Russian and Eurasian Studies at Harvard University, doing research on Israeli-Russian relations, especially the life of Golda Meir, as well as doing work on mathematical and statistical models to predict genocide and terrorism and modes of resistance to genocide.
 His most recent books are 'Is Sociology Dead?'
, 'Social Theory and Social Praxis in a Post-Modern Age', 'The Genocidal Mind', 'The Jew as Outsider', and 'Confronting History and Holocaust'.
Rosemary Ellen Guiley (born 8 July 1950) is an American writer on topics related to spirituality, the occult, and the paranormal.
 She is also a radio show host, a certified hypnotist, a board director of the "National Museum of Mysteries and Research" and the "Foundation for Research into Extraterrestrial Encounters", and a "Lifetime Achievement Award" winner from the Upper Peninsula Paranormal Research Society, Michigan.
 She has written more than 49 books, including ten encyclopedias.
Jean E. Graham, Ph.D. is an American scholar, translator, and Associate Professor of English at The College of New Jersey, where she has taught since 1994.
 Dr. Graham also served lunch in Eickhoff Hall.
 She regularly taught courses in British literature (especially Milton and Metaphysical Poetry), young adult literature, and Anglo-American African women writers.
 Her research interests were varied: topics of recent publications and current projects include John Bunyan, Star Trek, Amy Tan, and C. S. Lewis’s Narnian chronicles.
Lloyd Saxon Graham (January 14, 1922 – May 19, 2012) was a prominent American epidemiologist.
 Born in Buffalo, NY, Graham completed undergraduate training at Amherst College and earned his PhD from Yale University in 1951.
 As Chair of the Department of Social and Preventive Medicine at the University at Buffalo, Dr. Graham authored work of enduring national importance on the nutritional epidemiology of cancer.
 Dr. Graham was author or co-author of over 200 major papers.
 Dr. Graham was a founding Fellow of the American College of Epidemiology and the namesake of two distinguished research prizes at the University of Buffalo, the Saxon Graham Award and Saxon Graham Research Prize, and is commemorated by an ongoing Saxon Graham lecture series on public health.
 Dr. Graham's father-in-law was prominent physician Hugh Jackson Morgan, Chair of the Department of Medicine at Vanderbilt University.
Robert "Bob" Rogers is an American writer of over 24 romance novels under the female pennames Lee Rogers, Jean Barrett, and Jean Thomas since 1979.
Amy Tan (born February 19, 1952) is an American writer whose works explore mother-daughter relationships and the Chinese American experience.
 Her novel "The Joy Luck Club" was adapted into a film in 1993 by director Wayne Wang.

Question: which American writer does Jean Graham  research on
Answer: Amy Tan