![]() ![]() "I also acquired paper copies of Zagat guides on eBay and Amazon and then digitized those ratings so that I could have a continuous timeseries of ratings that goes back to 1994, before the advent and expansion of online rating platforms," he said. Greenberg's approach was to apply for and gain access to restricted-access government data that included private companies' sales information. They also needed performance measures for thousands of private businesses. To discern and measure the impact of internet-enabled rating platforms on restaurant performance, Greenberg and fellow researchers set out to gather continuous ratings information both before and after the proliferation of digital rating platforms. In turn, consumer choices based on these platforms impacts comparative business performance and all that entails for the businesses and their workers." "Rating platforms help provide this information. "When we look for a place to eat-particularly for a special or high-cost meal-we want to know if the meal and experience will be good," he said. Tourists, on the other hand, lack this firsthand information, so they must rely on rating platforms to inform their choices. ![]() Consequently, they are less reliant on rating platforms. Locals have firsthand information and experience with restaurants in their area, so they know the nuances of different offerings, Greenberg said. The paper was co-authored with New York University Stern School of Business faculty Gino Cattani and Joe Porac and former Stern doctoral student Daniel Sands, now of University College London. Greenberg co-authored the paper, " Rating Systems and Increased Heterogeneity in Firm Performance: Evidence From the New York City Restaurant Industry, 1994-2013," published Aug. "In neighborhoods frequented by 'locals,' the advent and expansion of internet-based ratings platforms did not result in greater disparities in restaurant sales despite how ubiquitous they are and how frequently we anecdotally use them," said Jason Greenberg, associate professor of management and organizations at the Peter and Stephanie Nolan School of Hotel Administration in the Cornell SC Johnson College of Business.
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