Publications

2025
Article

Statistical Inference for Heterogeneous Treatment Effects Discovered by Generic Machine Learning in Randomized Experiments

By: Kosuke Imai and Michael Lingzhi Li

Researchers are increasingly turning to machine learning (ML) algorithms to investigate causal heterogeneity in randomized experiments. Despite their promise, ML algorithms may fail to accurately ascertain heterogeneous treatment effects under practical settings with... View Details

Keywords: AI and Machine Learning; Mathematical Methods; Analytics and Data Science

August 2024
Article

How Do Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?

By: Leemore S. Dafny, Kate Ho and Edward Kong

Drug copayment coupons to reduce patient cost-sharing have become nearly ubiquitous for high-priced brand-name prescription drugs. Medicare bans such coupons on the grounds that they are kickbacks that induce utilization, but they are commonly used by... View Details

Keywords: Prescription Drugs; Coupons; Impact; Health Care and Treatment; Markets; Price; Spending; Pharmaceutical Industry; United States

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April 1988 (Revised April 1991)
Case

Boeing 767: From Concept to Production (A)

By: David A. Garvin

Describes the evolution of the Boeing 767 from the conception of the project to the start of manufacturing. Shows how the company manages an enormously complex and risky project and introduces students to a variety of estimating and management tools. The decision issue... View Details

Keywords: Production; Product Design; Product Development; Decisions; Risk and Uncertainty; Risk Management; Management Analysis, Tools, and Techniques; Air Transportation Industry; Manufacturing Industry

2010
Other Unpublished Work

Modeling Passenger Travel and Delays in the National Air Transportation System

Many of the existing methods for evaluating an airline's on-time performance are based on flight-centric measures of delay. However, recent research has demonstrated that passenger delays depend on many factors in addition to flight delays. For instance,... View Details

Keywords: Mathematical Methods; Performance Evaluation; Air Transportation Industry; United States

March 1988 (Revised June 1993)
Background Note

Leveraged Betas and the Cost of Equity

The objective is to delineate on methodology for measuring the risk associated with financial leverage and estimating its impact on the cost of equity capital. View Details

Keywords: Cost of Capital; Capital Structure; Equity

June 2009
Case

Midland Energy Resources, Inc.: Cost of Capital

By: Timothy A. Luehrman and Joel L. Heilprin

The senior vice president of project finance for a global oil and gas company must determine the weighted average cost of capital for the company as a whole and each of its divisions as part of the annual capital budgeting process. The case uses comparable companies to... View Details

Keywords: Risk Assessment; Risk and Uncertainty; Risk Management; Cost of Capital; Cash Flow; Capital Structure; Valuation; Capital Budgeting; Energy Industry

2023
Working Paper

Polarizing Corporations: Does Talent Flow to "Good" Firms?

By: Emanuele Colonnelli, Tim McQuade, Gabriel Ramos, Thomas Rauter and Olivia Xiong

We conduct a field experiment in partnership with the largest job platform in Brazil to study how environmental, social, and governance (ESG) practices of firms affect talent allocation. We find both an average job-seeker’s preference for ESG and a large degree of... View Details

Keywords: Corporate Social Responsibility and Impact; Job Search; Talent and Talent Management; Wages; Attitudes

2023
Working Paper

Complexity and Time

By: Benjamin Enke, Thomas Graeber and Ryan Oprea

We provide experimental evidence that core intertemporal choice anomalies -- including extreme short-run impatience, structural estimates of present bias, hyperbolicity and transitivity violations -- are driven by complexity rather than time or risk preferences. First,... View Details

Keywords: Decision Choices and Conditions; Motivation and Incentives

24 Jun 2015
Working Paper Summaries

Accounting Data, Market Values, and the Cross Section of Expected Returns World

Keywords: by Charles C.Y. Wang; Accounting

October 2000
Case

Tree Values

By: Richard S. Ruback and Kathleen Luchs

Describes two alternative tree cutting strategies. The first is to cut all trees that are at least 12 inches in diameter at breast height. The second is to thin the forest by cutting less desirable trees immediately and harvesting the crop trees later. The case... View Details

Keywords: Strategy; Decision Making; Cash Flow; Decision Choices and Conditions; Management Practices and Processes; Value Creation; Forestry Industry

December 1997
Case

Fixed Income Valuation

By: W. Carl Kester

A collection of problems that introduces students to the use of discounted cash flow analysis in the valuation of fixed income securities. Students are required to estimate bond prices and yields to maturity, among other items. View Details

Keywords: Valuation; Cash Flow; Bonds

07 Jul 2020
Working Paper Summaries

Predictable Financial Crises

Keywords: by Robin Greenwood, Samuel G. Hanson, Andrei Shleifer, and Jakob Ahm Sørensen

August 2013 (Revised November 2013)
Case

Gordon Brothers: Collateralizing Corporate Loans by Brands

By: Paul Healy and Maria Loumioti

The case explores the collateralization of intellectual property in a loan agreement between a highly leveraged apparel company and a large US bank. Leveraging intangibles in the credit market is a new practice that has significantly grown over the past few years.... View Details

Keywords: Intangible Assets; Accounting; Valuation; Finance; Restructuring; United States

Article

How Did the Great Recession Affect Charitable Giving?

By: Arthur C. Brooks

A great deal of research has studied the effects of income and tax changes on charitable giving. However, little work has focused on how these relationships were affected by the Great Recession. This article estimates the tax and income effects using the 2009 Panel... View Details

Keywords: Charitable Giving; Great Recession; Philanthropy; Philanthropy and Charitable Giving; Financial Crisis; Taxation; Policy

May 1993 (Revised June 1993)
Case

Friendly Cards, Inc.

By: William E. Fruhan Jr.

Involves analysis of a major capital investment proposal, an acquisition of another company, an estimate of the funds required for these two possible outlays, and a recommended course of management action. View Details

Keywords: Mergers and Acquisitions; Capital; Capital Budgeting; Investment

03 Nov 2020
Working Paper Summaries

An Executive Order Worth $100 Billion: The Impact of an Immigration Ban’s Announcement on Fortune 500 Firms’ Valuation

Keywords: by Dany Bahar, Prithwiraj Choudhury, and Britta Glennon

1980
Working Paper

Taxation and the Ex-dividend Day Behavior of Common Stock Prices

By: Jerry R. Green

The behavior of stock prices around ex-dividend days has been suggested as evidence for tax-induced clientele effects and as a means to estimate the average effective tax rate faced by investors. In this paper these possibilities are examined theoretically and... View Details

Keywords: Taxation; Stocks; Price

2016
Working Paper

Economic Transition and Private-Sector Labor Demand: Evidence from Urban China

By: Lakshmi Iyer, Xin Meng, Nancy Qian and Xiaoxue Zhao

This paper studies the policy determinants of economic transition and estimates the elasticity demand for labor in the infant private sector in urban China. We show that a reform that untied access to housing in urban areas from working for the state sector accounts... View Details

Keywords: Economic Transition; Structural Change; Labor Mobility; Transition; Human Capital; Private Sector; China

SSRN

2013
Working Paper

Return Predictability in the Treasury Market: Real Rates, Inflation, and Liquidity

By: Carolin E. Pflueger and Luis M. Viceira

Estimating the liquidity differential between inflation-indexed and nominal bond yields, we separately test for time-varying real rate risk premia, inflation risk premia, and liquidity premia in U.S. and U.K. bond markets. We find strong, model independent evidence... View Details

Keywords: Expectations Hypothesis; Term Structure; Real Interest Rate Risk; Inflation Risk; Inflation-Indexed Bonds; Financial Crisis; Inflation and Deflation; Financial Liquidity; Bonds; Investment Return; Risk and Uncertainty; United Kingdom; United States

SSRN