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  • Article

The Importance of Being Causal

By: Iavor I Bojinov, Albert Chen and Min Liu
Causal inference is the study of how actions, interventions, or treatments affect outcomes of interest. The methods that have received the lion’s share of attention in the data science literature for establishing causation are variations of randomized experiments.... View Details
Keywords: Causal Inference; Observational Studies; Cross-sectional Studies; Panel Studies; Interrupted Time-series; Instrumental Variables
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  • August 2015 (Revised January 2017)
  • Technical Note

From Correlation to Causation

By: Feng Zhu and Karim R. Lakhani
To make sound business decisions, managers must be comfortable with the concepts of correlation and causation. This background note provides an overview of correlation and causation using examples and explains why the former does not imply the latter. It also describes... View Details
Keywords: Statistics; Regression; Data Analytics; Decisions; Forecasting and Prediction; Judgments
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  • 2009
  • Working Paper

The CHAT Dataset

By: Diego A. Comin and Bart Hobijn
This note accompanies the Cross‐country Historical Adoption of Technology (CHAT) dataset. CHAT is an unbalanced panel dataset with information on the adoption of over 100 technologies in more than 150 countries since 1800. The data is available for download at:... View Details
Keywords: Geographic Location; History; Technology Adoption
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  • June 2005
  • Article

Inflation, Openness, and Exchange Rate Regimes: The Quest for Short-Term Commitment

By: Laura Alfaro
This paper further tests Romer's (1993) extension of Kydland and Prescott's (1977) predictions for dynamic-inconsistency problems in open economies. In a panel data set of developed and developing countries from 1973 to 1998, I find that openness does not play a role... View Details
Keywords: Forecasting and Prediction; Economy; Currency Exchange Rate; Developing Countries and Economies; Inflation and Deflation
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  • Research Summary

Statistical Methodology

William Simpson is developing methods of inference to use when assumptions of standard models are not met. He has created a hypothesis test to use for ipsative variables that adjusts for the non-zero correlations among variables expected under the null hypothesis. ... View Details

  • 2010
  • Chapter

Happiness Adaptation to Income beyond 'Basic Needs'

By: Rafael Di Tella and Robert MacCulloch
We test for whether, once "basic needs" are satisfied, there is happiness adaptation to further gains in income using three data sets. Individual German Panel Data from 1985 to 2000, and data on the well-being of over 600,000 people in a panel of European countries... View Details
Keywords: Wealth and Poverty; Happiness; Human Needs; Income; Adaptation; Economic Growth
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  • July 2010
  • Article

Is a Higher Calling Enough? Incentives Effects in the Church

By: Christopher Parsons, J. Hartzell and D. Yermack
We study the compensation and productivity of more than 2,000 Methodist ministers in a 43‐year panel data set. The church appears to use pay‐for‐performance incentives for its clergy, as their compensation follows a sharing rule by which pastors receive approximately... View Details
Keywords: Motivation and Incentives; Organizations; Religion; Performance Evaluation; Compensation and Benefits
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  • Research Summary

The Strategic and Performance Consequences of CEO Succession

By: Rakesh Khurana
The argument of this paper (with Nitin Nohria) is that research on executive turnover treats the departures of predecessors and the origin of successors as independent events. This approach has led to mixed empirical findings with respect to measuring the effects of... View Details
  • June 2010
  • Article

Star Power: Colleague Quality and Turnover

By: Boris Groysberg and Linda Eling-Lee
In this article, we argue that the existence of greater organizational resources, in the form of higher quality colleagues, acts as a retention mechanism. We test our hypotheses using a panel data set of securities analysts in 24 securities firms over a 9-year period.... View Details
Keywords: Quality; Human Resources
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  • 14 Feb 2005
  • Research & Ideas

Desktop Search and Revenue Streams

efforts to refine search capabilities. With that in mind, panel moderator Thomas R. Eisenmann, associate professor of Entrepreneurial Management at HBS, noted that the next wave in search tools is going beyond material on the World Wide... View Details
Keywords: by Julie Jette
  • Research Summary

Evolution of Competitive Advantage

Anita M. McGahan is studying the evolution of competitive advantage among firms in a cross section of industries. She is particularly interested in the structural conditions that enable firms to develop an enduring competitive advantage in new markets. McGahan has... View Details
  • May 2023
  • Article

Self-Preferencing at Amazon: Evidence from Search Rankings

By: Chiara Farronato, Andrey Fradkin and Alexander MacKay
We study whether Amazon engages in self-preferencing on its marketplace by favoring its own brands (e.g., Amazon Basics) in search. To address this question, we collect new micro-level consumer search data using a custom browser extension installed by a panel of study... View Details
Keywords: Consumer Behavior; E-commerce; Product Positioning; Brands and Branding
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  • 2014
  • Working Paper

Evolution of Land Distribution in West Bengal 1967-2004: Role of Land Reform and Demographic Changes

By: Pranab Bardhan, Michael Luca, Dilip Mookherjee and Francisco Pino
This paper studies how land reform and population growth affect land inequality and landlessness, focusing particularly on indirect effects owing to their influence on household divisions and land market transactions. Theoretical predictions of a model of household... View Details
Keywords: Inequality; Land Reform; Household Division; Land Markets; Equality and Inequality; Property; West Bengal
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  • 2013
  • Working Paper

Asset Accumulation and Labor Force Participation of Disability Insurance Applicants

By: Pian Shu
Using panel data from the RAND Health and Retirement Study, I show that rejected applicants for Social Security Disability Insurance (SSDI) possess significantly more assets immediately prior to their application and exhibit lower labor force attachment than accepted... View Details
Keywords: Disability Insurance; Asset Accumulation; Labor Force Participation; Assets; Behavior; Employment; Insurance; Insurance Industry; United States
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  • 04 Apr 2011
  • Research & Ideas

Attention Medical Shoppers: What Health Care Can Learn from Walmart and Amazon

panel discussion held at Harvard Business School, where several experts talked about how to treat the troubled industry at a time when the year-old Health Care and Education Reconciliation Act of 2010 is still in its relative infancy.... View Details
Keywords: by Carmen Nobel; Health
  • Article

Evolution of Land Distribution in West Bengal 1967–2004: Role of Land Reform and Demographic Changes

By: Pranab Bardhan, Michael Luca, Dilip Mookherjee and Francisco Pino
This paper studies how land reform and population growth affect land inequality and landlessness, focusing particularly on indirect effects owing to their influence on household divisions and land market transactions. Theoretical predictions of a model of household... View Details
Keywords: Inequality; Land Reform; Household Division; Land Markets; Equality and Inequality; Residency; Property; Household; West Bengal
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  • Research Summary

Inflation, Openness, and Exchange-Rate Regimes. The Quest for Short-Term Commitment

By: Laura Alfaro
This paper further tests Romers (1993) extension of Kydland and Prescotts (1977) predictions on dynamic-inconsistency problems with regard to open economies. In a panel data set, I find that openness does not seem to play a role in the short run in restricting... View Details
  • 26 Jun 2000
  • Research & Ideas

Presentation Round-Up

HBS Professor Marco Iansiti and H.T. Kung, William H. Gates Professor of Computer Science at Harvard, solicited views on new directions for the Internet in a panel discussion called "e-Service: The Next e-Wave." The current shift on the... View Details
Keywords: by Martha Lagace & Kenneth Liss; Technology; Communications; Telecommunications
  • February 2012
  • Article

Americans Do IT Better: US Multinationals and the Productivity Miracle

By: Nicholas Bloom, Raffaella Sadun and John Van Reenen
US productivity growth accelerated after 1995 (unlike Europe's), particularly in sectors that intensively use information technologies (IT). Using two new micro panel datasets we show that US multinationals operating in Europe also experienced a "productivity miracle."... View Details
Keywords: IT Productivity; American IT Productivity; Information Technology; Performance Productivity; Multinational Firms and Management; Management Practices and Processes; United States; Europe
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  • 14 Feb 2005
  • Research & Ideas

The World in Your Palm?

As makers of everything engage in an all-out features war to cram the most services, accessories, and functions into a single product, the real question for many is this: Does the consumer really want an all-in-one digital device? A panel... View Details
Keywords: by Sean Silverthorne

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