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  • 08 Aug 2013
  • News

Study finds online ratings vulnerable to bias

  • 2018
  • Working Paper

Product Quality and Entering Through Tying: Experimental Evidence

Dominant platform businesses often develop products in adjacent markets to complement their core business. One common approach used to gain traction in these adjacent markets has been to pursue a tying strategy. For example, Microsoft pre-installed Internet Explorer... View Details
Keywords: Market Entry and Exit; Digital Platforms; Competitive Strategy; Product Marketing; Quality
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  • 23 Jul 2013
  • First Look

First Look: July 23

and Yelp Review Fraud By: Luca, Michael, and Georgios Zervas Abstract—Review sites have become increasingly important sources of information for consumers. Because these reviews affect sales, businesses have the incentive to game the... View Details
Keywords: Anna Secino
  • 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
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  • Article

Positioning Brands Against Large Competitors to Increase Sales

By: Neeru Paharia, Jill Avery and Anat Keinan
We explore the effect of having a large dominant competitor and show the conditions under which focusing on a competitive threat, rather than hiding it, can actually help a brand. We demonstrate through lab and field studies that highlighting a large competitor's size... View Details
Keywords: Brands; Brand Management; Brand Positioning; Competitive Positioning; Brands and Branding; Marketing; Marketing Strategy; Consumer Products Industry; Retail Industry; Food and Beverage Industry; Air Transportation Industry; United States
Related

    Positioning Brands Against Large Competitors to Increase Sales

    The authors explore the effects of having a large dominant competitor and show conditions under which focusing on a competitive threat, rather than hiding it, can actually help a brand. Through lab and field studies, the authors demonstrate that highlighting a large... View Details
    • 14 Jun 2011
    • First Look

    First Look: June 14

      PublicationsThe Paradox of Excellence Authors:Thomas J. DeLong and Sara DeLong Publication:Harvard Business Review 89, no. 6 (June 2011) Abstract Why is it that so many smart, ambitious professionals are less productive and satisfied than they could be? We argue that... View Details
    Keywords: Sean Silverthorne
    • March 2016
    • Supplement

    Advertising Experiments at RestaurantGrades

    By: Weijia Dai, Hyunjin Kim and Michael Luca
    This exercise provides students with a data set consisting of results from a hypothetical experiment, and asks students to make recommendations based on the data. Through this process, the exercise teaches students to analyze, design, and interpret experiments. The... View Details
    Keywords: Experimental Methods; Analytics; Web Technology; Marketing; Digital Marketing; Analysis; Performance Effectiveness; Social Media
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    • 12 Mar 2019
    • HBS Seminar

    Giorgos Zervas, Boston University

    • 25 Feb 2025
    • HBS Seminar

    Michel Pham, Columbia University

      Trust

      Entrepreneurial ventures often fail in the developing world because of the lack of something taken for granted in the developed world: trust. Over centuries, the developed world has built customs and institutions such as enforceable contracts, an impartial legal... View Details
      • 24 Oct 2023
      • Research & Ideas

      When Tech Platforms Identify Black-Owned Businesses, White Customers Buy

      Luca, Abhay Aneja at the University of California-Berkeley, and Oren Reshef of Washington University in St. Louis, shows that making it easier to search for Black restaurant owners on Yelp substantially increased their demand, leading to... View Details
      Keywords: by Jay Fitzgerald; Food & Beverage
      • Web

      Founders & Investors - Entrepreneurship

      Smith Drugstore.com MBA 1995 Sir Martin S. Sorrell WPP MBA 1968 James L. Southern, III Pacific Lake Partners MBA 1983 Joseph S. Steinberg Leucadia National Corporation MBA 1970 Thomas G. Stemberg Staples MBA 1973 Jeremy R. Stoppelman Yelp... View Details
      • 23 May 2018
      • Research & Ideas

      How to Know If Your Neighborhood Is Being Gentrified

      Professor of Business Administration, who coauthored the study. “Our results also suggest that a range of local businesses actually expand during periods of gentrification.” The findings are included in the new paper Nowcasting Gentrification: Using View Details
      Keywords: by Dina Gerdeman
      • 23 Sep 2022
      • Research & Ideas

      8 Strategies to Sustain Business Innovation

      other dramatic pivots: Twitter was created as a text-style messaging program for a podcast company. Yelp was born as an automated email service. YouTube was originally an online dating site. Now they’re anchors of the digital world. “You... View Details
      Keywords: by Lane Lambert
      • 15 May 2017
      • Sharpening Your Skills

      The Promises and Limitations of Big Data

      hiring decisions than humans. In these stories from our recent archives, Harvard Business School researchers outline the promises of big data—and the limitations of trying to harness data from a firehose. The Civic Benefits of Google Street View and View Details
      Keywords: by Sean Silverthorne; Financial Services; Utilities; Public Administration; Health
      • 07 Jan 2019
      • Research & Ideas

      The Better Way to Forecast the Future

      Center] Related Reading: The Entrepreneurs Who Invented Economic Forecasting Nowcasting the Local Economy: Using Yelp Data to Measure Economic Activity at Scale RESEARCH PAPER: Bias in Official Fiscal Forecasts: Can Private Forecasts... View Details
      Keywords: by Roberta Holland; Air Transportation; Transportation
      • 23 Nov 2020
      • Research & Ideas

      COVID Was Supposed to Increase Bankruptcies. Instead, They've Gone Down.

      on the review site Yelp shut permanently during the pandemic. Don’t be afraid of bankruptcy protection So, what should consumers and policymakers do now as benefits from the CARES Act are running out and a second federal stimulus package... View Details
      Keywords: by Rachel Layne
      • 13 Feb 2017
      • Research & Ideas

      Paid Search Ads Pay Off for Lesser-Known Restaurants

      For business executives trying to decide where exactly in the digital realm to invest their advertising dollars, new research indicates that paid search ads on review sites such as Yelp can be a good way to go—at least for small,... View Details
      Keywords: by Dina Gerdeman; Food & Beverage
      • 01 Jun 2015
      • News

      Five-Star Research

      measurable impact on a business’s bottom line. For Luca, who has authored several studies on the topic—and is himself an occasional Yelp critic—online reviews are “one of the most powerful information sources that has emerged in decades,... View Details
      Keywords: April White; News, Library, Internet, and Other Services; Information