Publications

March 1996 (Revised October 1996)
Case

Singapore's Trade in Services

By: Debora L. Spar

Focuses on the efforts of Singapore's Economic Development Board (EDB) to grow the tiny island almost wholly through an expansion of its service economy. Between 1965 and 1990, Singapore achieved a remarkable rate of growth, largely by opening its economy to foreign... View Details

Keywords: Growth Management; Service Operations; Government and Politics; Developing Countries and Economies; Macroeconomics; Service Industry; Singapore

Educators

August 2006
Article

Confidence Intervals for Probabilities of Default

By: Samuel G. Hanson and Til Schuermann

In this paper we conduct a systematic comparison of confidence intervals around estimated probabilities of default (PD) using several analytical approaches as well as parametric and nonparametric bootstrap methods. We do so for two different PD estimation... View Details

Keywords: Credit Risk; Bootstrap; Mathematical Methods; Credit; Risk Management

04 Oct 2017
HBS Seminar

Tania Babina, Columbia Business School

20 Jun 2005
Research & Ideas

Creating a Positive Professional Image

non-verbal behavior (appearance, demeanor), verbal cues (vocal pitch, tone, and rate of speech, grammar and diction, disclosures), and demonstrative acts (citizenship, job performance). My research suggests that, in addition to using... View Details

Keywords: by Mallory Stark

Research Summary

Organisational Learning in Software Requirements Engineering and Management

The current research project addresses the continuing low success rate of software development projects, which has been frequently reported in empirical studies. For example, the 2004 Chaos Report by the Standish Group found that only 29% of 9,236 application... View Details

14 Feb 2023
HBS Case

Is Sweden Still 'Sweden'? A Liberal Utopia Grapples with an Identity Crisis

to expand its political platform, linking the migrants to a rising crime rate and other ills. “It’s a problem that’s playing out not just in Europe, but in the US as well,” Spar says of rising immigration numbers. “Sweden is an indicator... View Details

Keywords: by Lane Lambert

February 2025 (Revised February 2025)
Case

Managing Complexity at mymuesli

By: Thomas Graeber and Stacy Straaberg

In April 2009, direct-to-consumer e-commerce muesli brand mymuesli faced a flood of customer questions. The breakfast cereal startup enabled users to order personalized muesli on its website by choosing from 75 organic ingredients for a total of 566 quadrillion... View Details

Keywords: Customer Satisfaction; Decisions; Food; Product Marketing; Product Positioning; Product Launch; Problems and Challenges; Behavior; Competitive Advantage; Customization and Personalization; Segmentation; Internet and the Web; Food and Beverage Industry; Europe; Germany

Educators

2001
Article

The Economic Contribution of Information Technology: Towards Comparative and User Studies

By: Timothy F. Bresnahan and Shane Greenstein

By what process does technical change in information technology (IT) increase economic welfare? How does this process result in increases in welfare at different rates in different countries and regions? This paper considers existing literature on measuring the... View Details

Keywords: Economic Growth; Welfare; Information Technology; Measurement and Metrics

Register to Read

2022
Article

How to Choose a Default

By: John Beshears, Richard T. Mason and Shlomo Benartzi

We have developed a model for setting a default when a population is choosing among ordered choices—that is, ones listed in ascending or descending order. A company, for instance, might want to set a default contribution rate that will increase employees’ average... View Details

Keywords: Nudge; Choice Architecture; Behavioral Economics; Behavioral Science; Default; Savings; Decision Choices and Conditions; Behavior; Motivation and Incentives

Article

A 680,000-Person Megastudy of Nudges to Encourage Vaccination in Pharmacies

By: Katherine L. Milkman, Linnea Gandhi, Mitesh S. Patel, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Jonathan E. Bogard, Ilana Brody, Christopher F. Chabris, Edward Chang, Gretchen B. Chapman, Jennifer E. Dannals, Noah J. Goldstein, Amir Goren, Hal Hershfield, Alex Hirsch, Jillian Hmurovic, Samantha Horn, Dean Karlan, Ariella S. Kristal, Cait Lamberton, Michael N. Meyer, Allison H. Oakes, Maurice E. Schweitzer, Maheen Shermohammed, Jaochim H. Talloen, Caleb Warren, Ashley V. Whillans, Kuldeep N. Yadav, Julian J. Zlatev, Ron Berman, Chalanda N. Evans, Rahul Ladhania, Jens Ludwig, Nina Mazar, Sendhil Mullainathan, Christopher K. Snider, Jann Spiess, Eli Tsukayama, Lyle Ungar, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth

Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22... View Details

Keywords: Vaccination; Vaccines; Nudges; Communication Strategy; Communication Technology; Consumer Behavior; Health Care and Treatment

January 2022
Article

Global Behaviors, Perceptions, and the Emergence of Social Norms at the Onset of the COVID-19 Pandemic

By: Lukas Hensel, Marc Witte, Stefano Caria, Thiemo Fetzer, Stefano Fiorin, Friedrich M. Goetz, Margarita Gomez, Johannes Haushofer, Andriy Ivchenko, Gordon T. Kraft-Todd, Elena Reutskaja, Christopher Roth, Erez Yoeli and Jon M. Jachimowicz

We conducted a large-scale survey covering 58 countries and over 100,000 respondents between late March and early April 2020 to study beliefs and attitudes towards citizens' and governments' responses at the onset of the COVID-19 pandemic. Most respondents reported... View Details

Keywords: COVID-19; Government Regulation; Social Norms; Health Pandemics; Governing Rules, Regulations, and Reforms; Behavior; Perception; Global Range; Surveys

2021
Working Paper

Cognitive Biases: Mistakes or Missing Stakes?

By: Benjamin Enke, Uri Gneezy, Brian Hall, David Martin, Vadim Nelidov, Theo Offerman and Jeroen van de Ven

Despite decades of research on heuristics and biases, empirical evidence on the effect of large incentives—as present in relevant economic decisions—on cognitive biases is scant. This paper tests the effect of incentives on four widely documented biases: base rate... View Details

Keywords: Cognitive Biases; Incentives; Motivation and Incentives; Decision Making; Performance

August 2021
Article

Don't Take Their Word for It: The Misclassification of Bond Mutual Funds

By: Huaizhi Chen, Lauren Cohen and Umit Gurun

We provide evidence that bond fund managers misclassify their holdings, and that these misclassifications have a real and significant impact on investor capital flows. In particular, many funds report more investment grade assets than are actually held in their... View Details

Keywords: Mutual Funds; Economics; Finance; Measurement and Metrics; Risk and Uncertainty; Financial Services Industry

SSRN

Summer 2017
Article

Copyright Enforcement: Evidence from Two Field Experiments

By: Hong Luo and Julie Holland Mortimer

Effective dispute resolution is important for reducing private and social costs. We study how resolution responds to changes in price and communication using a new, extensive dataset of copyright infringement incidences by firms. The data cover two field experiments... View Details

Keywords: Copyright; Law Enforcement; Lawsuits and Litigation; Cost

Article

Multi-Echelon Inventory Management Under Short-Term Take-or-Pay Contracts

By: Joel Goh and Evan L. Porteus

We extend the Clark–Scarf serial multi-echelon inventory model to include procuring production inputs under short-term take-or-pay contracts at one or more stages. In each period, each such stage has the option to order/process at two different cost rates; the cheaper... View Details

Keywords: Inventory Management; Multi-echelon Inventory Theory; Karush Lemma; Clark-Scarf Model; Convex Ordering Cost; Advance Commitments; Supply Chain

May 2016 (Revised April 2018)
Case

Building the Digital Manufacturing Enterprise of the Future at Siemens

By: Willy Shih

This case describes the motivation for and the development of Siemens' digital manufacturing enterprise vision, which became the foundation for its implementation of Industrie 4.0. While the effort started with a purely defensive move by Anton Huber, head of the... View Details

Educators

June 2014
Article

Frictions in Shadow Banking: Evidence from the Lending Behavior of Money Market Funds

By: Sergey Chernenko and Adi Sunderam

We document the consequences of money market fund risk taking during the European sovereign debt crisis. Using a novel data set of security-level holdings of prime money market funds, we show that funds with large exposures to risky Eurozone banks suffered significant... View Details

Keywords: Money Market Mutual Funds; European Sovereign Debt Crisis; Runs; Contagion; Risk Taking; Investment Funds; Financial Crisis; Europe