Publications

2013
Working Paper

An Empirical Study of the Spillover Effects of Workload on Patient Length of Stay

By: Jillian Berry Jaeker and Anita Tucker

We use two years of inpatient data from 243 California hospitals to quantify the relationship between hospital-level workload and patient length of stay (LOS), and its "spillover" effects across patient types. Patients are categorized as medical or surgical, and the... View Details

Keywords: Workload; Processing Times; Healthcare; Working Conditions; Performance Productivity; Time Management; Health Care and Treatment; Health Industry; California

December 2010
Case

Oral Rehydration Therapy

By: Nava Ashraf and Claire Qureshi

This case highlights the puzzlingly high rate of diarrhea-related child mortality in developing countries despite the existence of a simple, effective treatment: oral rehydration therapy (ORT). ORT treated extreme dehydration caused by diarrhea, which was a leading... View Details

Keywords: Health Care and Treatment; Innovation Strategy; Problems and Challenges; Developing Countries and Economies; Technological Innovation; Distribution Channels; Emerging Markets; Consumer Behavior; Performance Consistency; Performance Evaluation; Health Industry; Africa; Asia

Educators

Article

Social Recycling Transforms Unwanted Goods into Happiness

By: Grant Edward Donnelly, Cait Lamberton, Rebecca Walker Reczek and Michael I. Norton

Consumers are often surrounded by resources that once offered meaning or happiness but that have lost this subjective value over time—even as they retain their objective utility. We explore the potential for social recycling—disposing of used goods by allowing other... View Details

Keywords: Disposition; Well-being; Prosocial Behavior; Pro-environmental Behavior; Happiness; Behavior; Philanthropy and Charitable Giving; Environmental Sustainability

March 2024
Article

Human Capital Affects Religious Identity: Causal Evidence from Kenya

By: Livia Alfonsi, Michal Bauer, Julie Chytilová and Edward Miguel

We study how human capital and economic conditions causally affect the choice of religious denomination. We utilize a longitudinal dataset monitoring the religious history of more than 5,000 Kenyans over 20 years, in tandem with a randomized experiment (deworming) that... View Details

Keywords: Religion; Human Capital; Developing Countries and Economies; Welfare; Kenya

2024
Working Paper

What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences

By: Mark Egan, Alexander MacKay and Hanbin Yang

We present an empirical model of portfolio choice that allows for the nonparametric estimation of investors' (subjective) expectations and risk preferences. Utilizing a comprehensive dataset of 401(k) plans from 2009 through 2019, we explore heterogeneity in asset... View Details

Keywords: Stock Market Expectations; Demand Estimation; Retirement Planning; Defined Contribution Retirement Plan; 401 (K); Finance; Investment Portfolio; Investment; Retirement; Behavioral Finance; Financial Services Industry; United States

SSRN

September 2010
Article

Do Inventory and Gross Margin Data Improve Sales Forecasts for U.S. Public Retailers?

By: Saravanan Kesavan, Vishal Gaur and Ananth Raman

Firm-level sales forecasts for retailers can be improved if we incorporate cost of goods sold, inventory, and gross margin (defined here as the ratio of sales to cost of goods sold) as three endogenous variables. We construct a simultaneous equations model, estimated... View Details

Keywords: Sales; Forecasting and Prediction; Distribution; Goods and Commodities; Cost; Public Sector; Profit; Mathematical Methods; Analytics and Data Science; Retail Industry; United States

Find at Harvard

While current levels of economic inequality in Africa receive ample attention from academics and policymakers, we know little about the long-run evolution of inequality in the region. Even the new and influential ‘global inequality literature’ that is associated... View Details

Program

Finance for Senior Executives

compensation incentives, and play a bigger role in helping your company optimize its financial resources and strengthen its bottom line. Details Apply strategic financial insight Make informed strategic decisions regarding capital structure View Details

2008
Working Paper

Reality versus Propaganda in the Formation of Beliefs about Privatization

By: Rafael Di Tella, Sebastian Galiani and Ernesto Schargrodsky

Argentina privatized most public utilities during the 1990s but re-nationalized the main water company in 2006. We study beliefs about the benefits of the privatization of water services amongst low and middle income groups immediately after the 2006 nationalization.... View Details

Keywords: Privatization; Public Ownership; Business and Community Relations; Business and Government Relations; Values and Beliefs; Public Opinion; Utilities Industry; Argentina

*Joined Harvard Faculty: 1991
Prior Faculty Appointments: Northwestern University, 1968-75;
University of Pittsburgh, 1975-91

*Doctoral Degree in Sociology Received from: The John Hopkins University;
MBA Degree Received from: The University of... View Details

Keywords: advertising; apparel; automotive; beverage; biotechnology; consumer products; entertainment; financial services; food; health care; marketing industry; pharmaceuticals; retailing; sports; telecommunications

Ray A. Goldberg

A native of North Dakota, Dr. Goldberg received his A.B. from Harvard University in 1948, his MBA from the Harvard Graduate School of Business Administration in 1950 and his Ph.D. in Agricultural Economics from the University of Minnesota in 1952.

... View Details

Keywords: agribusiness; agriculture; fast food; food; food processing; forest products; grocery; high technology; information; restaurant; retailing; soft drink; textiles; tobacco; transportation; wholesale; wine

Research Summary

Optimal Portfolios with Housing Derivatives

Households that contemplate moving to different cities or trading up or down in the fu-ture are exposed to substantial housing risk. In order to mitigate this risk, I derive the op-timal portfolios using housing futures. In addition to the optimum growth portfolio,... View Details

2022
Working Paper

Communicating Corporate Culture in Labor Markets: Evidence from Job Postings

By: Joseph Pacelli, Tianshuo Shi and Yuan Zou

We examine how firms craft their job postings to convey information about their culture and whether doing so helps attract employees. We utilize state-of-the-art machine learning methods to develop a comprehensive dictionary of key corporate values across the near... View Details

Keywords: Corporate Culture Significance; Labor Markets; Disclosure; Organizational Culture; Recruitment; Talent and Talent Management

SSRN

2019
Working Paper

Immigrant Networking and Collaboration: Survey Evidence from CIC

By: Sari Pekkala Kerr and William R. Kerr

Networking and the giving and receiving of advice outside of one’s own firm are important features of entrepreneurship and innovation. We study how immigrants and natives utilize the potential networking opportunities provided by CIC, formerly known as the Cambridge... View Details

Keywords: Immigrants; Networking; Advice; Entrepreneurs; Inventors; Start-up Employees; Venturing; Co-working; Agglomeration; Immigration; Entrepreneurship; Networks; Innovation and Invention; Social and Collaborative Networks

Research Summary

Overview

The focus of Professor Gross’ research agenda is U.S. technological innovation, innovation policy, and the effects of technological change on economic activity. He is also interested in learning about what drives individual creative behavior. Methodologically, he is... View Details

18 Mar 2024
Research & Ideas

When It Comes to Climate Regulation, Energy Companies Take a More Nuanced View

Common wisdom holds that oil and gas companies, electric utilities, and other industries known for their large carbon emissions generally oppose clean energy policies. Now, a study of corporate advocacy spanning 30 years reveals that many companies are more flexible... View Details

Keywords: by Desmond Dodd; Energy; Utilities

February 2021
Article

Topic Classification of Electric Vehicle Consumer Experiences with Transformer-Based Deep Learning

By: Sooji Ha, Daniel J Marchetto, Sameer Dharur and Omar Isaac Asensio

The transportation sector is a major contributor to greenhouse gas (GHG) emissions and is a driver of adverse health effects globally. Increasingly, government policies have promoted the adoption of electric vehicles (EVs) as a solution to mitigate GHG emissions.... View Details

Keywords: Natural Language Processing; Analytics and Data Science; Environmental Sustainability; Infrastructure; Transportation; Policy

May 2022
Teaching Note

Climate Action in Miami

By: Rosabeth Moss Kanter and Catarina Martinez

Teaching Note for HBS Case No. 322-101. The Miami metropolitan area is a global epicenter of climate risk from heat and sea level rise, but leaders have only recently mobilized for action to respond to this systemic challenge. Resilient 305 began a collaboration across... View Details

Keywords: Climate Change; Climate Impact; Change; Leadership; Cross-sector Collaboration; Coalition; Ecosystem; Greenhouse Gas Emissions; Cities; Environmental Sustainability; Infrastructure; Green Technology; Environmental Management; Miami

2011
Working Paper

Divide and Rule or the Rule of the Divided? Evidence from Africa

By: Stelios Michalopoulos and Elias Papaioannou

We investigate jointly the importance of contemporary country-level institutional structures and local ethnic-specific pre-colonial institutions in shaping comparative regional development in Africa. We utilize information on the spatial distribution of African... View Details

Keywords: Ethnicity; Development Economics; Geography; Government and Politics; Africa