Publications

Educators

Purchase

October 14, 2019
Article

Designing Better Online Review Systems

By: Geoff Donaker, Hyunjin Kim and Michael Luca

Online reviews are transforming the way consumers choose products and services of all sorts. We turn to TripAdvisor to plan a vacation, Zocdoc to find a doctor, and Yelp to choose a new restaurant. Reviews can create value for buyers and sellers alike, but only if they... View Details

Keywords: Reviews; Internet and the Web; Design; Quality; Reputation

Register to Read

2015
Working Paper

Online Word of Mouth and Product Review Disagreement

By: Frank Nagle and Christoph Riedl

Studies of online word of mouth have frequently posited―but never systematically conceptualized and explored―that the level of disagreement between existing product reviews can impact the volume and the valence of future reviews. In this study we develop a theoretical... View Details

Keywords: Online Word Of Mouth; Online Communities; Viral Marketing; Online Product Reviews; Quality; Internet and the Web; Consumer Behavior; Marketing Reference Programs; Social and Collaborative Networks; Digital Marketing; Analytics and Data Science

SSRN

June 2016
Article

Understanding Online Hotel Reviews Through Automated Text Analysis

By: Shawn Mankad, Hyunjeong "Spring" Han, Joel Goh and Srinagesh Gavirneni

Customer reviews submitted at Internet travel portals are an important yet underexplored new resource in obtaining feedback on customer experience for the hospitality industry. These data are often voluminous and unstructured, presenting analytical challenges for... View Details

Keywords: Hotel Reviews; Natural Language Processing; Information Technology; Service Operations; Accommodations Industry; Moscow

Purchase

Article

The Market Design and Policy of Online Review Platforms

By: Benjamin Edelman

I present the institutions and incentives of online reviews, including attracting initial reviews, assuring truthful reviews of genuine experiences, and avoiding inflated or deceptive reviews. I also explore the competition and consumer protection concerns associated... View Details

Keywords: Reviews; Reputation; Platforms; Marketplaces; Deception; Market Design; Multi-Sided Platforms; Law; Online Technology; Information Technology Industry; Telecommunications Industry; Accommodations Industry; Retail Industry

2010
Article

Impact of Online Consumer Reviews on Sales: The Moderating Role of Product and Consumer Characteristics

By: Feng Zhu and Michael Zhang

This article examines how product and consumer characteristics moderate the influence of online consumer reviews on product sales using data from the video game industry. The findings indicate that online reviews are more influential for less popular games and games... View Details

Keywords: Internet Marketing; Online Consumer Reviews; Word Of Mouth; Long Tail; Internet and the Web; Marketing Reference Programs; Digital Marketing; Video Game Industry

December 2015
Teaching Plan

Managing Online Reviews on TripAdvisor

By: Thales S. Teixeira and Matthew G. Preble

This teaching plan is designed to support Thales S. Teixeira's and Leora Kornfeld's "Managing Online Reviews on TripAdvisor," HBS No. 514-071. View Details

Purchase

November–December 2021
Article

Does Gender Matter? The Effect of Management Responses on Reviewing Behavior

By: Davide Proserpio, Isamar Troncoso and Francesca Valsesia

We study the effect of management responses on the reviewing behavior of self-identified female and male reviewers. Using data from Tripadvisor, we show that after hotels begin to respond to reviews, the probability that a negative review comes from a self-identified... View Details

Keywords: Word Of Mouth; Online Reviews; Management Responses; E-commerce; Gender; Prejudice and Bias; Digital Platforms; Customers

SSRN

2014
Article

Drivers and Dynamics of Online Word of Mouth

By: Frank Nagle and Christoph Riedl

Keywords: Online Word Of Mouth; Online Communities; Online Product Reviews; Internet and the Web; Consumer Behavior; Marketing Reference Programs; Digital Marketing

26 Jul 2022
Research & Ideas

Burgers with Bugs? What Happens When Restaurants Ignore Online Reviews

restaurants. Their work has three major takeaways (no pun intended): First, online reviews are more revealing when it comes to issues that consumers directly experience—the presence of pests and... View Details

Keywords: by Kara Baskin; Entertainment & Recreation; Food & Beverage; Retail

2022
Working Paper

Consumer Reviews and Regulation: Evidence from NYC Restaurants

By: Chiara Farronato and Georgios Zervas

We investigate the informativeness of hygiene signals in online reviews, and their effect on consumer choice and restaurant hygiene. We first extract signals of hygiene from Yelp. Among all dimensions that regulators monitor through mandated restaurant inspections, we... View Details

Keywords: Restaurants; Reviews; Hygiene; Yelp; Regulation; Food; Governing Rules, Regulations, and Reforms; Consumer Behavior

September 21, 2016
Article

For Better Online Product Reviews, Pay the Reviewers

By: Scott Duke Kominers

July 7, 2022
Other Article

Are Online Prices Higher Because of Pricing Algorithms?

By: Zach Y. Brown and Alexander J. MacKay

This article reviews recent work examining pricing strategies of major online retailers and the potential effects of pricing algorithms. We describe how pricing algorithms can lead to higher prices in a number of ways, even if some characteristics of these algorithms... View Details

Keywords: Pricing Algorithms; Online Marketplace; Digital Strategy; Internet and the Web; Retail Industry

Research Summary

Crowdsourced reviews

To determine whether online consumer reviews influence the way that reputation is formed, Professor Luca has combined reviews from the website Yelp.com with public restaurant data. He has shown that a one-star increase in Yelp ratings results in a 5- to 9-percent... View Details

Research Summary

The limits of reviews

Consumer reviews are an important source of information in the digital age. Yet there are limits to the role that reviews can play. In a case study, Professor Luca discusses the limits of reviews and how companies can create more comprehensive reputation systems... View Details

2013
Article

Where Not to Eat? Improving Public Policy by Predicting Hygiene Inspections Using Online Reviews

By: Jun Seok Kang, Polina Kuznetsova, Yejin Choi and Michael Luca

Restaurant hygiene inspections are often cited as a success story of public disclosure. Hygiene grades influence customer decisions and serve as an accountability system for restaurants. However, cities (which are responsible for inspections) have limited resources to... View Details

Keywords: Safety; Food; Governance Compliance; Mathematical Methods; Applications and Software; Public Administration Industry; Retail Industry; Food and Beverage Industry

21 Mar 2016
HBS Case

Can Customer Reviews Be 'Managed?'

Research says 85 percent of people will make a purchase after reading online reviews about a product or service. This has had huge implications for the hotel industry and helps explain why TripAdvisor, a... View Details

Keywords: by Brian Kenny; Advertising; Travel

13 May 2022
Research & Ideas

Company Reviews on Glassdoor: Petty Complaints or Signs of Potential Misconduct?

upstream indicators of culture gone sour, they scraped employee reviews from Glassdoor.com, a website where employees can leave subjective anonymous reviews about their employer. Harnessing machine learning... View Details

Keywords: by Michael Blanding; Technology

2013
Chapter

The Design of Online Advertising Markets

By: Benjamin Edelman

Because the market for online advertising is both new and fast-changing, participants experiment with all manner of variations. Should an advertiser's payment reflect the number of times an ad was shown, the number of times it was clicked, the number of sales that... View Details

Keywords: Misleading and Fraudulent Advertising; Online Advertising; Price; Market Design; Measurement and Metrics; Sales; Motivation and Incentives; Internet and the Web