Publications

February 2021
Tutorial

T-tests: Theory and Practice

By: Michael Parzen, Natalie Epstein, Chiara Farronato and Michael Toffel

This video provides an introduction to hypothesis testing, sampling, t-tests, and p-values. It provides examples of A/B testing and t-testing to assess whether difference between two groups are statistically significant. This video can be assigned in conjunction with... View Details

Keywords: Data Analysis; Data Analytics; Experiment Design; Experimentation; Analytics and Data Science; Analysis

November 2006
Case

Tickle

By: William A. Sahlman and Dan Heath

Describes a set of decisions confronting the management team of a rapidly growing online psychological testing and social networking company. They can either sell the company to a large public company, raise another round of capital from a preeminent venture capital... View Details

Keywords: Decisions; Internet and the Web; Growth Management; Internet and the Web; Business Strategy; Corporate Finance

27 Jan 2012
News

Apple and Google as Creative Archetypes

December 2005 (Revised February 2019)
Case

Brighter Smiles for the Masses--Colgate vs. P&G

By: Felix Oberholzer-Gee, Dennis Yao and Filipa Azevedo Jorge

In 2000, Procter & Gamble Co. introduced Crest Whitestrips, a new, revolutionary product that allowed consumers to whiten their teeth at home. With Whitestrips, P&G created an entire new category in oral care, worth $460 million in 2002. Whitestrips sent P&G's main... View Details

Keywords: Competitive Advantage; Competitive Strategy; Advertising; Product Launch; Patents; Price; Performance Effectiveness; Consumer Products Industry

July 2005
Exercise

Insider Trading Quiz

By: Lynn S. Paine and Christopher Bruner

Designed to test understanding of basic theories of insider trading under U.S. law. Presents six scenarios based on actual situations in which insider trading was alleged to have violated U.S. law, as well as a seventh scenario that took place in Italy, permitting... View Details

Keywords: Crime and Corruption; Stock Shares; Governing Rules, Regulations, and Reforms; Law; Theory; Europe; Italy; United States

09 Apr 2019
Working Paper Summaries

Formal Employment and Organized Crime: Regression Discontinuity Evidence from Colombia

Keywords: by Gaurav Khanna, Carlos Medina, Anant Nyshadham, and Jorge Tamayo

2014
Working Paper

Digital Discrimination: The Case of Airbnb.com

By: Benjamin Edelman and Michael Luca

Online marketplaces often contain information not only about products, but also about the people selling the products. In an effort to facilitate trust, many platforms encourage sellers to provide personal profiles and even to post pictures of themselves. However,... View Details

Keywords: Prejudice and Bias; Internet and the Web; Race; Trust; Renting or Rental; Accommodations Industry; Real Estate Industry

SSRN

Read Now

October 2007 (Revised January 2009)
Background Note

Analyzing Relative Costs

By: Hanna Halaburda and Jan W. Rivkin

Introduces students to the technique of relative cost analysis, a core technique of strategists. Among the intricate quantitative analyses that strategists undertake, relative cost analysis may be the most common. The goal of a relative cost analysis is simply to... View Details

Keywords: Cost; Management Analysis, Tools, and Techniques; Mathematical Methods; Competition; Competitive Advantage

December 2003 (Revised February 2004)
Case

Scott Lawson's Dilemma

By: Thomas R. Piper

The head of SysCom's test equipment division is concerned about how to answer employee and customer questions concerning the possible sale or liquidation of the division. The consequences of alternative approaches (full transparency vs. strong optimism and reassurance)... View Details

Keywords: Business Exit or Shutdown; Interpersonal Communication; Business Divisions; Corporate Governance; Ethics; Manufacturing Industry; Technology Industry

08 Aug 2011
News

Economics Journal: Women in Local Politics Offer Biggest Benefit

July 2024
Supplement

Fail Safe Testing, Inc. (A)

By: Richard S. Ruback and Royce Yudkoff

Pre-Abstract: Instructors should consider the timing of making videos available to students, as they may reveal key case details.
Abstract: Fail Safe Testing, Inc., founded in 1988, was the leading provider of fire hose pressure testing, ground ladder and pump... View Details

Keywords: Customers; Acquisition; Business Plan; Marketing Strategy

February 2016 (Revised July 2017)
Case

A Nation Divided: The United States and the Challenge of Secession

By: David Moss and Marc Campasano

Americans elected Abraham Lincoln as the nation's first Republican president in November of 1860. Northern political leaders had formed the Republican Party only a few years before, in large measure to combat the spread of slavery. Southerners had long been wary of... View Details

Keywords: Governance; War; Government and Politics; History; United States

16 Sep 2011
News

AIG Restores Name in TV Ad, Fulfilling CEO Call on Comeback

27 Jan 2022
HBS Seminar

Hamsa Bastani, Wharton

April 2002
Case

Pallotta TeamWorks

By: Allen S. Grossman and Elizabeth Kind

Pallotta Team Works is a for-profit, privately owned company that produces multiday fundraising events for nonprofit organizations. Dan Pallotta, the 40-year-old CEO, founded the enterprise in 1992. The company has grown rapidly, having raised over $200 million for... View Details

Keywords: For-Profit Firms; Business Model; Nonprofit Organizations; Philanthropy and Charitable Giving; Social Marketing; Marketing Strategy; Service Industry; Consulting Industry; United States

29 Jun 2020
News

After saving his own life with a repurposed drug, a professor reviews every drug being tried against Covid-19. Here's what he's found

19 May 2009
News

Harvard Business School to Accept Either GRE® or GMAT® Scores

March 2010
Article

Correcting for Cross-Sectional and Time-Series Dependence in Accounting Research

By: Ian D. Gow, Daniel Taylor and Gaizka Ormazabal

We review and evaluate the methods commonly used in the accounting literature to correct for cross-sectional and time-series dependence. While much of the accounting literature studies settings in which variables are cross-sectionally and serially correlated, we find... View Details

Keywords: History; Cost of Capital; Activity Based Costing and Management; Performance Evaluation; Cost Accounting; Time Management; Research; Mathematical Methods; Equity; Borrowing and Debt; Accounting Audits; Accounting Industry