by Michael Ewens - Publications - Faculty & Research - Harvard Business School

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16 Jul 2019
News

JUUL: Leading the Vaping Revolution

May 2018
Case

Environmental Platform LEEDership at USGBC

By: Michael W. Toffel, Timothy S. Simcoe and Aldo Sesia

By 2018, it was clear that U.S. Green Building Council (USGBC) had significantly contributed to the growth of green building and over its 25-year history had become a powerful brand in the construction sector with its Leadership in Energy and Environmental Design... View Details

Keywords: Environmental Sustainability; Standards; Business Model; Leadership; Problems and Challenges; Construction Industry; Green Technology Industry

May 2001
Article

Competing at Home to Win Abroad: Evidence from Japanese History

By: Mariko Sakakibara and Michael E. Porter

The study explores the influence of domestic competition on international trade performance, using data from a broad sample of Japanese industries. Domestic rivalry is measured directly using market-share instability rather than employing structural variables such as... View Details

Keywords: Competition; Global Range; History; Japan

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23 Oct 2012
First Look

First Look: October 23

paper: http://www.whatworksforamerica.org/ideas/inflection-point-new-vision-new-strategy-new-organization/ Customer-Driven Misconduct: How Competition Corrupts Business Practices Authors:Victor Manuel Bennett, Lamar Pierce, Jason A. Snyder, and View Details

Keywords: Sean Silverthorne

2012
Article

Open Innovation and Organization Design

By: Michael Tushman, Karim Lakhani and Hila Lifshitz - Assaf

This paper calls the organization design community to reconcile the divergent scholarly perspectives on the relationship between firm boundaries and the locus of innovation by moving beyond debates between open vs. closed boundaries and instead embracing the notion of... View Details

Keywords: Organization Design; Open Innovation; Innovation; Locus Of Innovation; Organizational Boundaries; Organizational Design; Organizational Structure; Innovation and Invention; Alliances; Vertical Integration; Boundaries

22 Jun 2010
First Look

First Look: June 22

advertising market—one that suffers quite a different set of problems. Display advertising systems place ads-typically, rectangular "banners"—on the majority of popular web sites. Though display ads are widespread, they are also troubled—ignored View Details

Keywords: Martha Lagace

2008
Working Paper

Variance-Seeking for Positive (and Variance-Aversion for Negative) Experiences: Risk-Seeking in the Domain of Gains?

By: Jolie Mae Martin, Gregory M. Barron and Michael I. Norton

In contrast to research which has conflated losses with negative experiences and gains with positive experiences, we argue that because reference points are set by memories of extremely good and bad experiences, most outcomes are seen as losses in positive domains and... View Details

Keywords: Change; Experience and Expertise; Marketing; Research; Risk and Uncertainty; Loss; Perspective

April 2018
Article

Consumers Avoid Buying from Firms with Higher CEO-to-Worker Pay Ratios

By: Bhavya Mohan, Tobias Schlager, Rohit Deshpandé and Michael I. Norton

We document a novel driver of consumer behavior: pay ratio disclosure. Swiss corporation performance data gathered during a legally mandated pay ratio referendum reveals that salient high pay ratios are associated with decreased firm sales (Pilot Study). An... View Details

Keywords: Pay Ratio; Wage Fairness; Purchase Intention; Customers; Wages; Fairness; Consumer Behavior

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February 2003
Other Article

The Emergence and Sustainability of Abnormal Profits

By: Michael E. Porter and Anita M. McGahan

In this paper, we examine the emergence and the sustainability of abnormal profits among businesses that were part of U.S. public corporations between 1981 and 1994 and that reported financial results for at least six years. Our results reveal strong asymmetries... View Details

Keywords: Strategy; United States

Article

The What and Why of Self-deception

By: Zoë Chance and Michael I. Norton

Scholars from many disciplines have investigated self-deception, but defining self-deception and establishing its possible benefits have been a matter of heated debate—a debate impoverished by a relative lack of empirical research. Drawing on recent research, we first... View Details

Keywords: Cognition and Thinking

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August 2020 (Revised September 2020)
Technical Note

Assessing Prediction Accuracy of Machine Learning Models

By: Michael W. Toffel, Natalie Epstein, Kris Ferreira and Yael Grushka-Cockayne

The note introduces a variety of methods to assess the accuracy of machine learning prediction models. The note begins by briefly introducing machine learning, overfitting, training versus test datasets, and cross validation. The following accuracy metrics and tools... View Details

Keywords: Machine Learning; Statistics; Econometric Analyses; Experimental Methods; Data Analysis; Data Analytics; Forecasting and Prediction; Analytics and Data Science; Analysis; Mathematical Methods

Article

Crowdsourcing City Government: Using Tournaments to Improve Inspection Accuracy

By: Edward Glaeser, Andrew Hillis, Scott Duke Kominers and Michael Luca

The proliferation of big data makes it possible to better target city services like hygiene inspections, but city governments rarely have the in-house talent needed for developing prediction algorithms. Cities could hire consultants, but a cheaper alternative is to... View Details

Keywords: User-generated Content; Operations; Tournaments; Policy-making; Machine Learning; Online Platforms; Analytics and Data Science; Mathematical Methods; City; Infrastructure; Business Processes; Government and Politics

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Article

How Elastic Are Preferences for Redistribution? Evidence from Randomized Survey Experiments

By: Ilyana Kuziemko, Michael I. Norton, Emmanuel Saez and Stefanie Stantcheva

We analyze randomized online survey experiments providing interactive, customized information on U.S. income inequality, the link between top income tax rates and economic growth, and the estate tax. The treatment has large effects on views about inequality but only... View Details

Keywords: Income; Taxation; Economic Growth; United States

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July 2011
Article

Kidney Paired Donation

By: C. Bradley Wallis, Kannan P. Samy, Alvin E. Roth and Michael A. Rees

Kidney paired donation (KPD) was first suggested in 1986, but it was not until 2000 when the first paired donation transplant was performed in the U.S. In the past decade, KPD has become the fastest growing source of transplantable kidneys, overcoming the barrier faced... View Details

Keywords: Philanthropy and Charitable Giving; Health Care and Treatment; Growth and Development Strategy; Success; Problems and Challenges; Programs; System; United States

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24 Jul 2012
First Look

First Look: July 24

PublicationsThe Need for Sector-Specific Materiality and Sustainability Reporting Standards Authors:Robert G. Eccles, Jr., Michael P. Krzus, Jean Rogers, and George Serafeim Publication:Journal of Applied Corporate Finance (forthcoming)... View Details

Keywords: Sean Silverthorne

Fall 2016
Article

The Integrity of Private Third-party Compliance Monitoring

By: Jodi L. Short and Michael W. Toffel

Government agencies are increasingly turning to private, third-party monitors to inspect and assess regulated entities’ compliance with law. The integrity of these regulatory regimes rests on the validity of the information third-party monitors provide to regulators.... View Details

Keywords: Regulation; Compliance; Compliance Policies; Conflict Of Interest; Independent Third Party; Inspection; Audit Quality; Auditor; Audit; Environment; Safety; Conflict of Interests; Working Conditions; Labor; Corporate Social Responsibility and Impact; Governance Compliance; Accounting Audits

2015
Working Paper

The Integrity of Private Third-party Compliance Monitoring

By: Jodi L. Short and Michael W. Toffel

Government agencies are increasingly turning to private, third-party monitors to inspect and assess regulated entities’ compliance with law. The integrity of these regulatory regimes rests on the validity of the information third-party monitors provide to regulators.... View Details

June 2018
Case

Meridian Systems

By: Frank V. Cespedes and Michael J. Roberts

The Meridian Systems case focuses on a start-up in the restaurant point of sale (POS) systems market. In early 2018, Meridian is getting ready to roll out a POS system based on a new technology—a tablet-based, Wi-Fi-enabled POS system (the "tablet" system, or... View Details

Keywords: Business Startups; Sales; Strategy; Salesforce Management; Organizational Structure; Technological Innovation; Marketing Strategy

06 Mar 2018
First Look

First Look at Research and Ideas, March 6, 2018

provide insights into why and how investors use reported environmental, social, and governance (ESG) information. Relevance to investment performance is the most frequent motivation for use of ESG data followed by client demand and... View Details

Keywords: Sean Silverthorne

January 2021
Case

The FIRE Savings Calculator

By: Michael Parzen and Paul Hamilton

This case follows Carol Muñoz, a member of the Financial Independence, Retire Early (FIRE) lifestyle movement. At the age of 45, Carol is considering retiring and living off the $1 million she has accumulated. Using Monte Carlo simulation, Carol forecasts the... View Details

Keywords: Analysis; Forecasting and Prediction; Financial Strategy; Investment Portfolio; Investment Return; Personal Finance; Saving; Risk and Uncertainty; Diversification; Theory; Personal Development and Career; Financial Services Industry

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