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Films based on famous books tend to do well in theaters: when Terry McMillan's acclaimed novel How Stella Got Her Groove Back was adapted into a movie in 1998, it was a commercial success. To investigate whether book-to-movie adaptations also have an impact on the books' popularity, two researchers examined online activity related to The Monuments Men and two other books that have been turned into movies. They found that the films' releases in theaters coincided with increased intent to read the original books but not with higher average ratings for those books.