In the two years after books win splashy awards such as the Man Booker Prize, their average ratings on Goodreads.com decline by about a quarter-point on a 1-to-5 scale, whereas those that were runners-up maintain their high ratings, say Balázs Kovács of the University of Lugano and Amanda J. Sharkey of the University of Chicago. A big award draws a larger audience, which includes a greater proportion of people whose tastes aren’t aligned with the book’s style or subject.

(Source: Administrative Science Quarterly)