Americans rely on online reviews for selecting everything from an Airbnb room to an employer, but these reviews are often skewed. That’s because people whose opinions fall at the extreme ends of the spectrum tend to write reviews, according to the University of Pennsylvania’s Ioana Marinescu, University of Chicago Harris School of Public Policy postdoctoral scholar Nadav Klein, and Glassdoor’s Andrew Chamberlain and Morgan Smart.
http://review.chicagobooth.edu/economics/2018/article/love-it-or-hate-it-how-get-more-balance-online-customer-reviews/