Publications

2018
Article

The Role of Overbilling in Hospitals' Earnings Management Decisions

By: Jonas Heese

This paper examines the role of overbilling in hospitals’ earnings management choices. Overbilling by hospitals is a form of revenue manipulation that involves misclassifying a patient into a diagnosis-related group that yields higher reimbursement. As overbilling... View Details

Keywords: Overbilling; Accrual-based Earnings Management; Real Activities Manipulation; For-profit Hospitals; Earnings Management; Health Industry

SSRN

26 Feb 2014
Research & Ideas

How Grocery Bags Manipulate Your Mind

There's a classic cartoon plot device that represents a struggle with temptation. A tiny angel pops up on the conflicted character's left shoulder, urging him to follow the path of righteousness. A tiny devil sits on his right shoulder, pressing him to give into his... View Details

Keywords: by Carmen Nobel; Retail

February 2011
Article

Mind Perception: Real but Not Artificial Faces Sustain Neural Activity beyond the N170/VPP

By: Thalia Wheatley, Anna Weinberg, Christine E. Looser, Tim Moran and Greg Hajcak

Faces are visual objects that hold special significance as the icons of other minds. Previous researchers using event-related potentials (ERPs) have found that faces are uniquely associated with an increased N170/vertex positive potential (VPP) and a more sustained... View Details

Keywords: Neuroscience; Mind Perception; Social Psychology; Face Perception; Personal Characteristics; Science; Cognition and Thinking

09 Jan 2006
Research & Ideas

Rebuilding Commercial Real Estate

every major Wall Street firm has become active in real estate private equity. "Morgan Stanley alone has gone from zero dollars under management to almost $40 billion over the past fifteen years,"... View Details

Keywords: by Roger Thompson; Real Estate; Real Estate

December 2022
Article

Does Industry Employment of Active Regulators Weaken Oversight?

By: Jonas Heese

I study whether industry employment of active regulators weakens oversight. To examine this question, I exploit that the Financial Reporting Enforcement Panel (FREP), the German capital-market regulator responsible for enforcing public firms’ compliance with accounting... View Details

Keywords: Conflict-of-interest Policies; Directorships; Enforcement Actions; Industry Employment; Self-regulatory Organizations; Governance Compliance; Governing and Advisory Boards; Policy; Conflict of Interests

December 2016
Article

Health Care Needs Real Competition

By: Leemore S. Dafny and Thomas H. Lee

The U.S. health care system is inefficient, unreliable, and crushingly expensive. There is no shortage of proposed solutions, but central to the best of them is the idea that health care needs more competition. In other sectors, competition improves quality and... View Details

Keywords: Competition; Health Care and Treatment; Health Industry; United States

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December 2014
Article

The Real Product Market Impact of Mergers

By: Albert Sheen

I document sources of value creation in mergers by analyzing novel data on the quality and price of goods sold by merging firms. When two competitors in a product market merge, their products converge in quality, and prices fall relative to the competition. These... View Details

Keywords: Value Creation; Quality; Price; Goods and Commodities; Mergers and Acquisitions

Research Summary

Credit Supply Shocks, Network Effects, and the Real Economy

By: Laura Alfaro

We consider the real effects of bank lending shocks and how they permeate the economy through buyer-supplier linkages. We combine administrative data on all firms in Spain with a matched bank-firm-loan dataset with information on the universe of corporate loans for... View Details

Article

Pattern Detection in the Activation Space for Identifying Synthesized Content

By: Celia Cintas, Skyler Speakman, Girmaw Abebe Tadesse, Victor Akinwande, Edward McFowland III and Komminist Weldemariam

Generative Adversarial Networks (GANs) have recently achieved unprecedented success in photo-realistic image synthesis from low-dimensional random noise. The ability to synthesize high-quality content at a large scale brings potential risks as the generated samples may... View Details

Keywords: Subset Scanning; Generative Models; Synthetic Content Detection

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2017
Working Paper

Nowcasting the Local Economy: Using Yelp Data to Measure Economic Activity

By: Edward L. Glaeser, Hyunjin Kim and Michael Luca

Can new data sources from online platforms help to measure local economic activity? Government datasets from agencies such as the U.S. Census Bureau provide the standard measures of economic activity at the local level. However, these statistics typically appear only... View Details

Keywords: Economy; Analytics and Data Science; Local Range; Social and Collaborative Networks

SSRN

May 2008
Article

Real and Accrual-Based Earnings Management in the Pre- and Post-Sarbanes Oxley Periods

By: Daniel Cohen, Aiyesha Dey and Thomas Lys

We document that accrual‐based earnings management increased steadily from 1987 until the passage of the Sarbanes‐Oxley Act (SOX) in 2002, followed by a significant decline after the passage of SOX. Conversely, the level of real earnings management activities declined... View Details

Keywords: Earnings Management; Governing Rules, Regulations, and Reforms; Outcome or Result

01 Nov 2017
What Do You Think?

What Are the Real Lessons of the Wells Fargo Case?

they’re doing. Customers tell us they do business with Wells Fargo because our people care about them—that is our Vision.” But the problems didn’t stop there. In August 2017, the bank found that the fraudulent activity affected 1.4... View Details

Keywords: by James Heskett; Banking

19 Mar 2014
Working Paper Summaries

The Use of Broker Votes to Reward Brokerage Firms’ and Their Analysts’ Research Activities

Keywords: by David A. Maber, Boris Groysberg & Paul M. Healy; Financial Services

June 2014 (Revised May 2020)
Supplement

Busse Place (B): Hannah's Dilemma

By: Arthur I. Segel and John H. Vogel, Jr.

Marisa Sanchez, a new Associate at Douglas Private Equity Advisors, confronts a dilemma when she is asked by a Senior Vice President (SVP) to do due diligence on a deal he wants to bring before the investment committee which will include the SVP, Douglas' owner and... View Details

Keywords: Real Estate; Financial Analysis; Property; Finance; Analysis; Ethics; Real Estate Industry; United States

Purchase

September 1996 (Revised July 1997)
Case

Grupo Sidek (A)

By: Kenneth A. Froot and Alberto Moel

A large Mexican conglomerate, active in tourism, real estate, and steel, is faced with difficult macroeconomic conditions beginning with the Peso crisis of December 1994. The conglomerate had extensive dollar-indexed liabilities and was caught in a crunch when the... View Details

Keywords: Foreign Exchange; Real Estate; Debt Policy; Tourism; Steel; Business Conglomerates; Macroeconomics; Currency Exchange Rate; Crisis Management; Valuation; Mexico

Educators

Purchase

14 Dec 1999
Research & Ideas

From Spare Change to Real Change: The Social Sector as a Beta Site for Business Innovation

healthy communities. Traditionally, businesses have supported the social sector in two different ways: they contribute their employees' time for volunteer activities, and they support community initiatives with money and gifts in kind. Both View Details

Keywords: by Rosabeth Moss Kanter

May 2017
Supplement

Boston Children's Hospital Process Map Video

By: Robert S. Kaplan and Mary Witkowski

The 13 minute video simulates a discussion among orthopedic surgeons and cast room technicians about the processes and resources used when applying long leg casts for patients. The video should be used when teaching Boston Children’s Hospital (Abridged) case, #914-407,... View Details

Keywords: Activity Based Costing; Healthcare Costing; Process Maps; Activity Based Costing and Management; Health Care and Treatment

Purchase

September 1984 (Revised July 2005)
Case

Higgins v. Commissioner

By: Henry B. Reiling

Discusses the issue of whether an activity is a trade or business. The Court held that the taxpayer's very substantial stock and bond portfolio management activities were not a trade or business, whereas the taxpayer's real estate activities did constitute a trade or... View Details

Keywords: Taxation; Courts and Trials; Investment Portfolio; Property; United States