• September–October 2020
• Article

The Air War Versus the Ground Game: An Analysis of Multi-Channel Marketing in U.S. Presidential Elections

By: Lingling Zhang and Doug J. Chung

This study jointly examines the effects of television advertising and field operations in U.S. presidential elections, with the former referred to as the “air war” and the latter as the “ground game.” Specifically, the study focuses on how different campaign... View Details

Keywords: Multi-channel Marketing; Ground Campaigning; Political Campaigns; Discrete-choice Model; Instrumental Variables; Political Elections; Marketing Channels; Advertising; United States

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Zhang, Lingling, and Doug J. Chung. "The Air War Versus the Ground Game: An Analysis of Multi-Channel Marketing in U.S. Presidential Elections." Marketing Science 39, no. 5 (September–October 2020): 872–892.

• Article

Financing Innovation

By: William R. Kerr and Ramana Nanda

We review the recent literature on the financing of innovation, inclusive of large companies and new startups. This research strand has been very active over the past five years, generating important new findings, questioning some long-held beliefs, and creating its... View Details

Keywords: Entrepreneurship; Borrowing and Debt; Innovation and Invention

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Kerr, William R., and Ramana Nanda. "Financing Innovation." Annual Review of Financial Economics 7 (2015): 445–462.

• January 1998 (Revised February 2006)
• Background Note

Creating Competitive Advantage

By: Pankaj Ghemawat and Jan W. Rivkin

A firm such as Schering-Plough that earns superior, long-run financial returns within its industry is said to enjoy a competitive advantage over its rivals. This note examines the logic of how firms create competitive advantage. It emphasizes two themes: First, to... View Details

Keywords: Competitive Advantage; Competitive Strategy; Management; Business Strategy; Growth and Development Strategy; Innovation Strategy; Management Practices and Processes; Value Creation; Pharmaceutical Industry

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Ghemawat, Pankaj, and Jan W. Rivkin. "Creating Competitive Advantage." Harvard Business School Background Note 798-062, January 1998. (Revised February 2006.)

• 22 Mar 2024
• Blog Post

Driving Impact in Emerging Markets with HBS Alum Nneka Chime (MBA 2015)

Nneka Chime’s (MBA 2015) career path offers an alternative road map for HBS students and alumni seeking to make a difference in the world. While seeking, she aligned her professional choices with a larger mission rather than following a... View Details

• 2024
• Working Paper

Automating Short-Term Payroll Savings: Evidence from Two Large U.K. Experiments

By: Sarah Holmes Berk, James J. Choi, Jay Garg, John Beshears and David Laibson

Automatic enrollment is often used to increase retirement savings. What are the effects of using it (or, alternatively, requiring an active enrollment choice) to increase short-term savings? We evaluate two experiments in the U.K. at employers that enable workers to... View Details

Keywords: Retirement Savings; Participation; Automatic Enrollment; Retirement; Human Resources

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Berk, Sarah Holmes, James J. Choi, Jay Garg, John Beshears, and David Laibson. "Automating Short-Term Payroll Savings: Evidence from Two Large U.K. Experiments." NBER Working Paper Series, No. 32581, June 2024.

• 2024
• Working Paper

Advice and the Bayesian Entrepreneur

By: Susan Cohen and Rembrand Koning

Bayesian entrepreneurship starts from the premise that entrepreneurs’ beliefs guide their theorizing, experimentation, and choices (Agrawal et al., n.d.). Since each entrepreneur has unique beliefs based on their own set of past experiences, cognitive ability, and... View Details

Keywords: Entrepreneurship; Decision Choices and Conditions

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Cohen, Susan, and Rembrand Koning. "Advice and the Bayesian Entrepreneur." Harvard Business School Working Paper, No. 25-029, November 2024.

• May 2010
• Article

Elections and Discretionary Accruals: Evidence from 2004

By: Karthik Ramanna and Sugata Roychowdhury

We examine the accrual choices of outsourcing firms with links to U.S. congressional candidates during the 2004 elections, when corporate outsourcing was a major campaign issue. We find that politically connected firms with more extensive outsourcing activities have... View Details

Keywords: Political Economy; Accounting Information; Accruals Management; Campaign Contributions; Discretionary Accruals; Election Outcomes; Political Currency; Political Process; Social Issues; Political Elections; Job Cuts and Outsourcing; Motivation and Incentives; Earnings Management; Welfare; United States

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Ramanna, Karthik, and Sugata Roychowdhury. "Elections and Discretionary Accruals: Evidence from 2004." Journal of Accounting Research 48, no. 2 (May 2010): 445–475. (Solicited for presentation at the 2009 Journal of Accounting Research Conference.)

• 22 May 2007
• Working Paper Summaries

Strategy-Proofness versus Efficiency in Matching with Indifferences: Redesigning the NYC High School Match

Keywords: by Atila Abdulkadiroglu, Parag A. Pathak & Alvin E. Roth

• June 2019
• Case

Rachael Ray: Cooking Up a Brand

By: Boris Groysberg, Robin Abrahams and Kerry Herman

Rachael Ray built a remarkable career and brand, first as a cooking personality, and then as a lifestyle maven. This case explores her early career, decisions taken along the way, and the successes she achieved in publishing, television and as a spokesperson. As her... View Details

Keywords: Personal Development and Career; Decision Choices and Conditions; Brands and Branding; Entrepreneurship

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Groysberg, Boris, Robin Abrahams, and Kerry Herman. "Rachael Ray: Cooking Up a Brand." Harvard Business School Case 419-022, June 2019.

• September 1995 (Revised March 2023)
• Background Note

Process Fundamentals

By: Ann E. Gray and James Leonard

This note provides an introduction for a course or module covering the basic elements of production or service operations and how processes are managed. Begins by discussing the activities that take place in a "process." Analysis tools such as the process flow diagram... View Details

Keywords: Service Operations; Operations; Management; Business Processes; Analysis

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Gray, Ann E., and James Leonard. "Process Fundamentals." Harvard Business School Background Note 696-023, September 1995. (Revised March 2023.)

• August 2020 (Revised October 2020)
• Exercise

To Prioritize Money or Time? The P-Mot Exercise (Student)

By: Ashley Whillans and Liz Goldenberg

Working professionals are often in the predicament of needing to make a choice between activities that will grant them more money or more time. Indeed, in large-scale representative panels of working adults, most respondents report feeling pressed for both time and... View Details

Keywords: Time; Time-as Money; Money; Time Management; Decision Making

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Whillans, Ashley, and Liz Goldenberg. "To Prioritize Money or Time? The P-Mot Exercise (Student)." Harvard Business School Exercise 921-012, August 2020. (Revised October 2020.)

• 15 Feb 2024
• Blog Post

How I Spent My 2+2 Deferral: Carol Wright

The HBS 2+2 program is a deferred admission process for current students in their final year of study, either in college or a full-time master’s degree program. If you are admitted through 2+2, you work for two to four years in a field of your View Details