Publications

October 2016
Article

Technical Debt and System Architecture: The Impact of Coupling on Defect-related Activity

By: Alan MacCormack and Daniel J. Sturtevant

Technical debt is created when design decisions that are expedient in the short-term increase the costs of maintaining and adapting this system in future. An important component of technical debt relates to decisions about system architecture. As systems grow and... View Details

Keywords: Information Infrastructure; Performance Efficiency; Applications and Software; Infrastructure

Read Now

06 Jun 2016
Research & Ideas

Skills and Behaviors that Make Entrepreneurs Successful

understanding of the skills and behaviors that they need to be successful.” In addition, researchers will be able to examine the data by age, gender, country, industry, size of company, pace of growth, and type of venture “to understand... View Details

Keywords: by HBS Working Knowledge

12 Oct 2021
Research & Ideas

What Actually Draws Sports Fans to Games? It's Not Star Athletes.

least-well-attended game to 93,370 spectators for the highest. “A lot of the stadiums seat 60,000; and the largest stadium seats upwards of 100,000 people,” Ferguson says. “Given the size of these stadiums, we don’t have to worry about... View Details

Keywords: by Rachel Layne; Sports

Web

Finance - Faculty & Research

extended model is calibrated for each of the countries in the new dataset, we find that the size of these costs is large, thus substantially reducing the welfare-enhancing effects of capital controls compared with the frictionless Ramsey... View Details

10 Dec 2012
Working Paper Summaries

Vulnerable Banks

Keywords: by Robin Greenwood, Augustin Landier & David Thesmar; Banking; Financial Services

2012
Working Paper

Clusters, Convergence, and Economic Performance

By: Mercedes Delgado, Michael E. Porter and Scott Stern

This paper evaluates the role of regional cluster composition in the economic performance of industries, clusters, and regions. On the one hand, diminishing returns to specialization in a location can result in a convergence effect: the growth rate of an industry... View Details

Keywords: Industry Clusters; Performance; Economics

Find at Harvard

2010
Other Unpublished Work

Why Takeover Vulnerability Matters to Debtholders

By: Joan Farre-Mensa

Recent work documents that firms that are more vulnerable to takeover have higher borrowing costs. This paper investigates the reasons behind this stylized fact. My results show that firms with few antitakeover defenses face a higher cost of debt because lenders are... View Details

Keywords: Acquisition; Borrowing and Debt; Cost; Equity; Banks and Banking; Investment Portfolio; Risk Management; Agreements and Arrangements; Business and Shareholder Relations; Conflict and Resolution

SSRN

23 Apr 2014
Working Paper Summaries

Corporate Financial Policies in Misvalued Credit Markets

Keywords: by Jarrad Harford, Marc Martos-Vila & Matthew Rhodes-Kropf; Financial Services; Banking

Research Summary

Consumer Decision Making and Behavioral Research

By: John T. Gourville

John Gourville’s research focuses on consumer behavior, especially in the areas of pricing and consumer decision making. In the area of pricing, for instance, he has looked at the role of time on how consumers interpret and react to product costs and prices.... View Details

November 2014
Case

Nestlé SA, 2014

By: John R. Wells and Galen Danskin

In 2014, Nestlé was the largest producer of packaged foods and beverages in the world. 2013 revenues were $103.7 billion and operating profits $16.1 billion (15.5% of sales). The company owned 29 mega brands, each generating more than Euro 1 billion ($1.25 billion).... View Details

Keywords: Consumer Products; Acquisitions; Strategy; Goods and Commodities; Nutrition; Emerging Markets; Corporate Social Responsibility and Impact; Competitive Strategy; Consumer Products Industry; Europe

17 Jan 2012
Working Paper Summaries

Expectations, Network Effects and Platform Pricing

Keywords: by Andrei Hagiu & Hanna Hałaburda; Entertainment & Recreation

January 2025 (Revised April 2025)
Case

Duolingo: On a 'Streak'

By: Jeffrey F. Rayport, Nicole Tempest Keller and Nicole Luo

In December 2024, Severin Hacker, Co-Founder and Chief Technology Officer of Duolingo, reflected on the remarkable evolution of the language-learning app he helped launch in 2011. As the #1 most downloaded education app in the world, Duolingo had over 100 million... View Details

Keywords: Learning; AI and Machine Learning; Growth and Development Strategy; Motivation and Incentives; Diversification; Business Model; Market Entry and Exit; Technology Industry; Education Industry; United States

November 2024 (Revised December 2024)
Case

Moonfare and the Democratization of Private Equity

By: Victoria Ivashina and Srimayi Mylavarapu

Founded in 2016, Moonfare headquartered in Europe, was a pioneer in the “democratization” of private equity investments. Historically, private equity was accessible only to institutional investors like pension funds, endowments, sovereign wealth funds, and large family... View Details

Keywords: Private Equity; Customers; Wealth; Business Strategy; Segmentation; Technological Innovation; Product Launch; Financial Services Industry; Europe

August 2020
Article

Does Spending Money on Others Promote Happiness? A Registered Replication Report

By: Lara B. Aknin, Elizabeth W. Dunn, Jason Proulx, Iris Lok and Michael I. Norton

Research indicates that spending money on others—prosocial spending—leads to greater happiness than spending money on oneself (e.g., Dunn, Aknin, & Norton, 2008, 2014). These findings have received widespread attention because they offer insight into why people engage... View Details

Keywords: Prosocial Spending; Generosity; Well-being; Replication; Happiness; Behavior; Spending