Publications

May 2021
Article

Ideology and Composition Among an Online Crowd: Evidence From Wikipedians

By: Shane Greenstein, Grace Gu and Feng Zhu

Online communities bring together participants from diverse backgrounds and often face challenges in aggregating their opinions. We infer lessons from the experience of individual contributors to Wikipedia articles about U.S. politics. We identify two factors that... View Details

Keywords: User Segregation; Online Community; Contested Knowledge; Collective Intelligence; Ideology; Bias; Wikipedia; Knowledge Sharing; Perspective; Government and Politics

March 2020
Article

Diagnosing Missing Always at Random in Multivariate Data

By: Iavor I. Bojinov, Natesh S. Pillai and Donald B. Rubin

Models for analyzing multivariate data sets with missing values require strong, often assessable, assumptions. The most common of these is that the mechanism that created the missing data is ignorable—a twofold assumption dependent on the mode of inference. The first... View Details

Keywords: Missing Data; Diagnostic Tools; Sensitivity Analysis; Hypothesis Testing; Missing At Random; Row Exchangeability; Analytics and Data Science; Mathematical Methods

2014
Working Paper

SOX after Ten Years: A Multidisciplinary Review

By: John C. Coates and Suraj Srinivasan

We review and assess research findings from 120 papers in accounting, finance, and law to evaluate the impact of the Sarbanes-Oxley Act. We describe significant developments in how the Act was implemented and find that despite severe criticism, the Act and institutions... View Details

Keywords: Laws and Statutes

SSRN

2012
Other Book

Redefining German Health Care: Moving to a Value-Based System

By: Michael E. Porter and Clemens Guth

The German health care system is on a collision course with budget realities. Costs are high and rising, and quality problems are becoming ever more apparent. Decades of reforms have produced little change to these troubling trends. Why has Germany failed to solve... View Details

Keywords: Health

Purchase

Article

SOX after Ten Years: A Multidisciplinary Review

By: Suraj Srinivasan and John C. Coates IV

We review and assess research findings from 120+ papers in accounting, finance, and law to evaluate the impact of the Sarbanes-Oxley Act. We describe significant developments in how the Act was implemented and find that despite severe criticism, the Act and... View Details

Keywords: Financial Reporting; Laws and Statutes; United States

SSRN

2013
Working Paper

Digital Dark Matter and the Economics of Apache

By: Shane Greenstein and Frank Nagle

Researchers have long hypothesized that spillovers from government, university, and private company R&D contribute to economic growth, but these contributions may be difficult to measure when they take a non-pecuniary form. The growth of networking devices and the... View Details

Keywords: Measurement and Metrics; Internet and the Web; Performance Productivity; Applications and Software; Economic Growth; Research and Development

June 2004 (Revised January 2005)
Case

Rambus Inc., 2004

By: David B. Yoffie and Deborah Freier

Examines the role of technology licensing in strategies for high-technology companies. In the 1990s, Rambus developed a revolutionary memory technology that would improve the ability of DRAMs to keep pace with ever-faster microprocessors. To commercialize the... View Details

Keywords: Innovation Strategy; Lawsuits and Litigation; Strategic Planning; Relationships; Commercialization; Competition; Technology Adoption; Value; Semiconductor Industry

Educators

Purchase

February 2002 (Revised September 2002)
Case

Competition in Japanese Financial Markets, 2002

By: Tarun Khanna and Louis P. DiLorenzo, Jr

In early 2002, Japan, the world's largest economy, had been mired in a decade-long recession. A range of stimulus packages had failed to work their magic. The "Big Bang" financial deregulation reforms announced in 1998 had not quite produced the economic boom that the... View Details

Keywords: Risk and Uncertainty; Competition; Investment Banking; Financial Markets; Globalization; Financial Crisis; Commercial Banking; Banking Industry; Japan

March 1996 (Revised November 1997)
Case

Dewar's (A): Brand Repositioning in the 1990's

By: Alvin J. Silk and Lisa Klein Pearo

Dewar's, a major brand of Scotch whisky, produced by United Distillers of the U.K., and the U.S. leader in the Scotch category with a 15% market share, faced a declining market among traditional consumers of distilled spirits. Given the growing societal, legal, and... View Details

Keywords: Advertising; Customers; Brands and Branding; Marketing Strategy; Market Participation; Strategic Planning; Opportunities; Consumer Products Industry; Food and Beverage Industry; United Kingdom; United States

Educators

Purchase

Speaker's Box, Journal of Advertising Research

“Speaker’s Box” invites academics and practitioners to identify potential areas of research affecting marketing and advertising. Its intention is to bridge the gap between the length... View Details

Web

2023 Reunion Presentations - Alumni

faculty to interact in real time with students and alumni from around the world, much as they would in a traditional HBS classroom. Through this platform, now in its second iteration, we have created a space that will allow engagement with up to 96 participants at a... View Details

Web

Stages of Development - Institute For Strategy And Competitiveness

Investment-Driven Stage In the Investment-Driven Stage, efficiency in producing standard products and services becomes the dominant source of competitive advantage. Economies at this stage concentrate on manufacturing and on outsourced... View Details

29 Mar 2011
Working Paper Summaries

Risky Trust: How Multi-entity Teams Develop Trust in a High Risk Endeavor

Keywords: by Faaiza Rashid & Amy C. Edmondson

Teaching Interest

Supply Chain Management

By: Kris Johnson Ferreira

The Supply Chain Management (SCM) course builds on aspects of the first-year Technology and Operations Management (RC TOM) course. However, whereas RC TOM focuses primarily on developing and producing products and services, SCM emphasizes managing... View Details

2022
Working Paper

The Stock Market Value of Human Capital Creation

By: Matthias Regier and Ethan Rouen

We develop a measure of firm-year-specific human capital investment from publicly disclosed personnel expenses (PE) and examine the stock market valuation of this investment. Measuring the future value of PE (PEFV) based on the relation between lagged... View Details

Keywords: Intangibles; Market Valuation; Human Capital; Stocks; Financial Markets; Valuation

SSRN

September 2012 (Revised September 2015)
Case

Doing Business in Ghana

By: Felix Oberholzer-Gee and Elena Corsi

An entrepreneur considered investing in tomato paste manufacturing in Ghana, an emerging economy, and pondered the opportunities and challenges of investing here. Ghana's economy had been growing over the last decade, reaching a peak of 14.4% growth rate in 2011. Now a... View Details

Keywords: Emergent Countries; Strategy; Opportunity Cost; Emerging Markets; Agriculture and Agribusiness Industry; Ghana

Educators

2007
Other Unpublished Work

Effects of Inventory on Demand for Rentals in the Home Video Market

By: Ioannis Ioannou, Julie Mortimer and Richard Mortimer

Retailer inventory decisions can greatly influence observed demand for a product by affecting, among other things, product availability (stock-outs) and product visibility in the store. These inventory decisions are affected by numerous factors including vertical... View Details

Keywords: Decisions; Demand and Consumers; Supply Chain Management; Competition; Contracts; Entertainment and Recreation Industry; United States