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Show Results For
- All HBS Web
(3,413)
- People (1)
- News (1,029)
- Research (2,044)
- Events (7)
- Multimedia (50)
- Faculty Publications (985)
- August 2020 (Revised September 2020)
- Technical Note
Assessing Prediction Accuracy of Machine Learning Models
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
Toffel, Michael W., Natalie Epstein, Kris Ferreira, and Yael Grushka-Cockayne. "Assessing Prediction Accuracy of Machine Learning Models." Harvard Business School Technical Note 621-045, August 2020. (Revised September 2020.)
- 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
Kuziemko, Ilyana, Michael I. Norton, Emmanuel Saez, and Stefanie Stantcheva. "How Elastic Are Preferences for Redistribution? Evidence from Randomized Survey Experiments." American Economic Review 105, no. 4 (April 2015): 1478–1508.
- 2014
- Article
Paying It Forward: Generalized Reciprocity and the Limits of Generosity
By: Kurt Gray, Adrian F. Ward and Michael I. Norton
When people are the victims of greed or recipients of generosity, their first impulse is often to pay back that behavior in kind. What happens when people cannot reciprocate, but instead have the chance to be cruel or kind to someone entirely different—to pay it... View Details
Gray, Kurt, Adrian F. Ward, and Michael I. Norton. "Paying It Forward: Generalized Reciprocity and the Limits of Generosity." Journal of Experimental Psychology: General 143, no. 1 (February 2014): 247–254.
- March 2010 (Revised October 2011)
- Case
Highland District County Hospital: Gastroenterology Care in Sweden
By: Michael E. Porter, Jennifer F Baron and Martin Rejler
Sweden's Highland District County Hospital, similar to a community hospital in the US, undertook a major restructuring to integrate care delivery for medical conditions served by the Department of Medicine. Each subspecialty within the Department would form a single,... View Details
Porter, Michael E., Jennifer F Baron, and Martin Rejler. "Highland District County Hospital: Gastroenterology Care in Sweden." Harvard Business School Case 710-469, March 2010. (Revised October 2011.)
- December 2014 (Revised October 2017)
- Case
Dow: Breakthroughs to World Challenges
By: Michael E. Porter, Mark R. Kramer and Annelena Lobb
Dow had adopted the "Breakthroughs to World Challenges" (BWC) program as part of its ten-year 2015 Sustainability Goals. BWC was an internal award recognizing products that effectively addressed one of five world challenges: energy and climate change, sustainable water... View Details
Porter, Michael E., Mark R. Kramer, and Annelena Lobb. "Dow: Breakthroughs to World Challenges." Harvard Business School Case 715-403, December 2014. (Revised October 2017.)
- May 2018
- Other Article
A Cross-Country Comparison of Dynamics in the Large Firm Wage Premium
By: Emanuele Colonnelli, Joacim Tag, Michael Webb and Stefanie Wolter
We provide stylized facts on the existence and dynamics over time of the large firm wage premium for four countries. We examine matched employer-employee micro-data from Brazil, Germany, Sweden, and the UK, and find that the large firm premium exists in all these... View Details
Colonnelli, Emanuele, Joacim Tag, Michael Webb, and Stefanie Wolter. "A Cross-Country Comparison of Dynamics in the Large Firm Wage Premium." AEA Papers and Proceedings 108 (May 2018): 323–327.
- 05 Jul 2006
- First Look
First Look: July 5, 2006
Working PapersThe Framing Effect of Price Format Marco Bertini and Luc Wathieu Existing evidence suggests that preferences are affected by whether a price is presented as one all-inclusive expense or partitioned into a series of... View Details
Keywords: Sean Silverthorne
- 06 Dec 2011
- First Look
First Look: Dec. 6
PublicationsFlying Without a Net: Turn Fear of Change into Fuel for Success Author:Thomas J. DeLong Publication:Harvard Business Review Press, 2011 Abstract Confronted by omnipresent threats of job loss and change, even the brightest... View Details
Keywords: Sean Silverthorne
- July/August 2004
- Article
Stakeholders and Environmental Management Practices: An Institutional Framework
By: Magali Delmas and Michael W. Toffel
Despite burgeoning research on companies' environmental strategies and environmental management practices, it remains unclear why some firms adopt environmental management practices beyond regulatory compliance. This paper leverages institutional theory by proposing... View Details
Keywords: Strategy; Management Practices and Processes; Environmental Management; Adoption; Business and Stakeholder Relations; Organizational Structure; Factories, Labs, and Plants; Competition; Framework; Governance Compliance; Governing Rules, Regulations, and Reforms
Delmas, Magali, and Michael W. Toffel. "Stakeholders and Environmental Management Practices: An Institutional Framework." Business Strategy and the Environment 13, no. 4 (July/August 2004): 209–222.
- 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
Sakakibara, Mariko, and Michael E. Porter. "Competing at Home to Win Abroad: Evidence from Japanese History." Review of Economics and Statistics 83, no. 2 (May 2001).
- 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
Short, Jodi L., and Michael W. Toffel. "The Integrity of Private Third-party Compliance Monitoring." Administrative & Regulatory Law News 42, no. 1 (Fall 2016): 22–25.
- 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
Keywords: Regulation; Compliance; Compliance Policies; Conflict Of Interest; Independent Third Party; Inspection; Audit Quality; Auditor; Audit; Environment; Production; Supply Chain; Quality; Government Administration; Working Conditions; Safety; Labor; Governing Rules, Regulations, and Reforms; Governance Compliance; Manufacturing Industry; Public Administration Industry; Accounting Industry; Service Industry; United States
Short, Jodi L., and Michael W. Toffel. "The Integrity of Private Third-party Compliance Monitoring." Harvard Kennedy School Regulatory Policy Program Working Paper, No. RPP-2015-20, November 2015. (Revised December 2015.)
- 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
Porter, Michael E., and Anita M. McGahan. "The Emergence and Sustainability of Abnormal Profits." Strategic Organization 1, no. 1 (February 2003): 79–108.
- Teaching Interest
Harvard Business Analytics Program
The Harvard Business Analytics Program is offered through a collaboration between Harvard Business School (HBS), the John A. Paulson School of Engineering and Applied Sciences (SEAS), and the Faculty of Arts and Sciences (FAS).
Designed for... View Details
- March 31, 2022
- Article
Two Approaches to Capping Health Care Prices
By: Michael E. Chernew, Maximilian J. Pany and Leemore S. Dafny
High health care prices for the privately-insured contribute to high premiums, which put downward pressure on wages, and induce employers to reduce benefit generosity and charge employees more for coverage. As the average annual premium for family coverage currently... View Details
Chernew, Michael E., Maximilian J. Pany, and Leemore S. Dafny. "Two Approaches to Capping Health Care Prices." Health Affairs Forefront (March 31, 2022).
- 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
Mohan, Bhavya, Tobias Schlager, Rohit Deshpandé, and Michael I. Norton. "Consumers Avoid Buying from Firms with Higher CEO-to-Worker Pay Ratios." Special Issue on Marketplace Morality. Journal of Consumer Psychology 28, no. 2 (April 2018): 344–352.
- 13 Dec 2016
- First Look
December 13, 2016
protection than SOEs. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=51975 December 2016 Harvard Business Review Fixing Discrimination in Online Marketplaces By: Fisman, Ray, and Michael View Details
Keywords: Carmen Nobel
- July 2000
- Background Note
Industry Transformation
By: Michael E. Porter and Jan W. Rivkin
One of the steepest challenges a strategist faces is to navigate his or her company through a period of industry transformation--an era of rapid and wholesale changes in industry structure. This note considers how periods of transformation typically unfold. It then... View Details
Keywords: Technological Innovation; Management; Management Practices and Processes; Industry Growth; Industry Structures; Strategy; Competitive Strategy; Corporate Strategy; Consulting Industry; Service Industry
Porter, Michael E., and Jan W. Rivkin. "Industry Transformation." Harvard Business School Background Note 701-008, July 2000.
- 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
- 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
Wallis, C. Bradley, Kannan P. Samy, Alvin E. Roth, and Michael A. Rees. "Kidney Paired Donation." Nephrology, Dialysis, Transplantation 26, no. 7 (July 2011): 2091–2099.