(Institute for Operations Research and the Management Sciences) Product reviews and ratings have a strong impact on consumer consideration. In restaurant reviews, new research upcoming in the INFORMS journal Information Systems Research shows that location bias, based on the popularity difference between the reviewer’s hometown and the distance to their destination, can affect a reviewers online rating by as much as 11%.

Original source: https://www.eurekalert.org/pub_releases/2020-02/ifor-pdb020620.php