Publications

16 Mar 2009
Research & Ideas

When the Internet Runs Out of IP Addresses

ISPs all offer IPv4 transit. Transition raises the question of who goes first. ISPs have hesitated to offer IPv6 service because there's not much demand. Users (and end-user networks like companies and universities) aren't demanding IPv6... View Details

Keywords: by Sean Silverthorne; Telecommunications

December 2022
Article

The Task Bind: Explaining Gender Differences in Managerial Tasks and Performance

By: Alexandra C. Feldberg

This multi-method study of managers in a grocery chain identifies a novel mechanism by which threats of gender stereotypes undermine women’s ability to be effective managers. I find that women managers face a task bind, a dilemma that managers experience as they try to... View Details

Keywords: Gender Stereotypes; Gender; Managerial Roles; Performance Expectations

January 2024
Article

Fencing Off Silicon Valley: Cross-Border Venture Capital and Technology Spillovers

By: Ufuk Akcigit, Sina T. Ates, Josh Lerner, Richard Townsend and Yulia Zhestkova

The treatment of foreign investors is a contentious topic in U.S. entrepreneurship policy. We model a setting where foreign corporate investments in Silicon Valley may allow U.S. entrepreneurs to pursue technologies that they could not otherwise, but may also lead to... View Details

Keywords: Innovation; Corporate Venture Capital; Knowledge Spillovers; Foreign Direct Investment; Innovation and Invention; Venture Capital; Entrepreneurship; Policy

SSRN

July 1999
Article

Analysts' Forecast Accuracy: Do Ability and Portfolio Complexity Matter

By: Michael B. Clement

Prior studies have identified systematic and time persistent differences in analysts’ earnings forecast accuracy, but have not explained why the differences exist. Using the I/B/E/S Detail History database, this study finds that forecast accuracy is positively... View Details

Keywords: Analysis; Forecasting and Prediction; Performance Evaluation; Experience and Expertise

Article

Undisclosed Debt Sustainability

By: Laura Alfaro and Fabio Kanczuk

Over the past decade, non-Paris Club creditors, notably China, have become an important source of financing for low- and middle-income countries. In contrast with typical sovereign debt, these lending arrangements are not public, and other creditors have no information... View Details

Keywords: Paris Club; Transparency; Sovereign Finance; Borrowing and Debt; International Finance

March 2022 (Revised January 2025)
Technical Note

Linear Regression

By: Iavor I. Bojinov, Michael Parzen and Paul Hamilton

This note provides an overview of linear regression for an introductory data science course. It begins with a discussion of correlation, and explains why correlation does not necessarily imply causation. The note then describes the method of least squares, and how to... View Details

Keywords: Data Science; Linear Regression; Mathematical Modeling; Mathematical Methods; Analytics and Data Science

Educators

May 2021
Article

Private and Social Returns to R&D: Drug Development and Demographics

By: Efraim Benmelech, Janice Eberly, Dimitris Papanikolaou and Joshua Krieger

Investment in intangible capital such as R&D has increased dramatically since the 1990s. However, productivity growth remains sluggish in recent years. One potential reason is that a significant share of the increase in intangible investment is geared toward consumer... View Details

Keywords: Drug Development; Research and Development; Investment Return; Demographics; Pharmaceutical Industry

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Article

Are Online and Offline Prices Similar? Evidence from Large Multi-Channel Retailers

By: Alberto Cavallo

Online prices are increasingly used for measurement and research applications, yet little is known about their relation to prices in physical stores, where most retail transactions occur. I conduct the first large-scale comparison of prices simultaneously collected... View Details

Keywords: Online Prices; Offline Prices; Multi-channel Retailers; Price; Internet and the Web; Measurement and Metrics; Retail Industry

Article

Liquidity in Retirement Savings Systems: An International Comparison

By: John Beshears, James J. Choi, Joshua Hurwitz, David Laibson and Brigitte C. Madrian

We compare the liquidity that six developed countries have built into their employer-based defined contribution (DC) retirement schemes. In Germany, Singapore, and the UK, withdrawals are essentially banned no matter what kind of transitory income shock the household... View Details

Keywords: Saving; Financial Liquidity; Retirement; Canada; Germany; Australia; United Kingdom; United States; Singapore

2003
Chapter

Short-Term America Revisited? Boom and Bust in the Venture Capital Industry and the Impact on Innovation

By: Josh Lerner and Paul A. Gompers

This chapter seeks to understand the implications of the recent decline in venture activity for innovation. It argues that the situation may not be as grim as it initially appears. While there are many reasons for believing that on average venture capital has a... View Details

Keywords: Venture Capital; Innovation and Invention; Business Cycles; Financial Services Industry; United States

03 Mar 2017
News

Do Search Ads Really Work?

July 1994 (Revised August 1994)
Case

Pacific Bell: Centrex Reengineering

Describes the redesign and rollout of the new order-fulfillment process for a flagship product at Pacific Bell. Pacific Bell is one of the Regional Bell Operating Companies comprised of seven regional business units. Rather than implement the new process, roles, and... View Details

Keywords: Organizational Change and Adaptation; Change Management; Information Technology; Order Taking and Fulfillment; Telecommunications Industry

Educators