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Show Results For
- All HBS Web
(3,674)
- People (9)
- News (619)
- Research (2,463)
- Events (62)
- Multimedia (3)
- Faculty Publications (1,167)
- 2010
- Working Paper
Evaluating the Effects of Large-Scale Health Interventions in Developing Countries: The Zambian Malaria Initiative
By: Nava Ashraf, Gunther Fink and David N. Weil
Since 2003, Zambia has been engaged in a large-scale, centrally coordinated national anti-malaria campaign which has become a model in sub-Saharan Africa. This paper aims at quantifying the individual and macro level benefits of this campaign, which involved mass... View Details
Keywords: Cost vs Benefits; Developing Countries and Economies; Health Care and Treatment; Health Disorders; Performance Evaluation; Programs; Health Industry; Zambia
Ashraf, Nava, Gunther Fink, and David N. Weil. "Evaluating the Effects of Large-Scale Health Interventions in Developing Countries: The Zambian Malaria Initiative." NBER Working Paper Series, No. 16069, June 2010.
- Fall 2024
- Article
Redemption Mechanisms in Poison Pills: Evidence on Pill Design and Law Firm Effects
By: Olivier Baum and Guhan Subramanian
We present the first evidence on the incidence of “trip wire” versus “last look” poison pills. Using a hand-collected data set of 130 poison pills implemented and/or amended between January 1, 2020 and March 31, 2023, we find that pills are almost evenly divided... View Details
Baum, Olivier, and Guhan Subramanian. "Redemption Mechanisms in Poison Pills: Evidence on Pill Design and Law Firm Effects." Business Lawyer 79, no. 4 (Fall 2024): 1043–1069.
- November 5, 2021
- Article
Leaders: Stop Confusing Correlation with Causation
By: Michael Luca
We’ve all been told that correlation does not imply causation. Yet many business leaders, elected officials, and media outlets still make causal claims based on misleading correlations. These claims are too often unscrutinized, amplified, and mistakenly used to guide... View Details
Keywords: Behavioral Economics; Data Analysis; Organizations; Decision Making; Analytics and Data Science; Analysis; Learning
Luca, Michael. "Leaders: Stop Confusing Correlation with Causation." Harvard Business Review Digital Articles (November 5, 2021).
- September 2023
- Article
Consuming Contests: The Effect of Outcome Uncertainty on Spectator Attendance in the Australian Football League
By: Patrick Ferguson and Karim R. Lakhani
Contests that non-contestants consume for entertainment are a fixture of economic, cultural and political life. We exploit injury-induced changes to teams' line-ups in a professional sports setting to examine whether individuals prefer to consume contests that have... View Details
Ferguson, Patrick, and Karim R. Lakhani. "Consuming Contests: The Effect of Outcome Uncertainty on Spectator Attendance in the Australian Football League." Economic Record 99, no. 326 (September 2023): 410–435.
- 2016
- Chapter
Evaluating the Effects of Large Scale Health Interventions in Developing Countries: The Zambian Malaria Initiative
By: Nava Ashraf, Gunther Fink and David N. Weil
Since 2003, Zambia has been engaged in a large-scale, centrally coordinated national anti-Malaria campaign, which has become a model in sub-Saharan Africa. This paper aims at quantifying the individual and macro-level benefits of this campaign, which involved mass... View Details
Ashraf, Nava, Gunther Fink, and David N. Weil. "Evaluating the Effects of Large Scale Health Interventions in Developing Countries: The Zambian Malaria Initiative." Chap. 1 in African Successes, Volume 2: Human Capital, edited by Sebastian Edwards, Simon Johnson, and David N. Weil. University of Chicago Press, 2016.
- August, 2022
- Article
Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the United States
By: Vasiliki Fouka and Marco Tabellini
How do social group boundaries evolve? Does the appearance of a new outgroup change the ingroup's perceptions of other outgroups? We introduce a conceptual framework of context-dependent categorization, in which exposure to one minority leads to recategorization of... View Details
Keywords: In-group-out-group Relations; Ingroup-outgroup Relations; Immigration; Race; Relationships; United States
Fouka, Vasiliki, and Marco Tabellini. "Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the United States." American Political Science Review 116, no. 3 (August, 2022): 968–984. (Featured in the Boston Globe, Washington Post, and HBS Working Knowledge.)
- Article
Effects of Cultural Ethnicity, Firm Size, and Firm Age on Senior Executives' Trust in Their Overseas Business Partners: Evidence from China
By: Crystal Jiang, Roy Y.J. Chua, Masaaki Kotabe and Janet Murray
We investigate trust relationships between senior business executives and their overseas partners. Drawing on the similarity-attraction paradigm, social-categorization theory, and the distinction between cognition- and affect-based trust, we argue that executives trust... View Details
Keywords: Ethnicity; Culture; Management Teams; Cognition and Thinking; Networks; Globalized Firms and Management; Partners and Partnerships; Business Growth and Maturation; Size; Trust; China
Jiang, Crystal, Roy Y.J. Chua, Masaaki Kotabe, and Janet Murray. "Effects of Cultural Ethnicity, Firm Size, and Firm Age on Senior Executives' Trust in Their Overseas Business Partners: Evidence from China." Journal of International Business Studies 42, no. 9 (December 2011): 1150–1173. (Equal Authorship Among All Authors.)
- 7 Aug 2008
- Conference Presentation
Networking, planning, and the effect of political institutions on new venture survival
By: Shon R. Hiatt and Wesley Sine
- 2014
- Working Paper
Eclipsed and Confounded Identities: When High-Status Affiliations Impede Organizational Growth
By: Daniel Malter
I propose that an organization's growth potential may suffer if its identity is eclipsed by or confounded with the organizations with which it collaborates and competes. Using status as a salient feature of identity, I devise two network measures to capture the degree... View Details
Keywords: Distinctiveness; Status; Networks; Resource Acquisition; Growth; Venture Capital; Status and Position; Organizational Change and Adaptation; Identity; Growth and Development Strategy
Malter, Daniel. "Eclipsed and Confounded Identities: When High-Status Affiliations Impede Organizational Growth." Harvard Business School Working Paper, No. 15-019, October 2014.
- 2022
- Article
Probing GNN Explainers: A Rigorous Theoretical and Empirical Analysis of GNN Explanation Methods.
By: Chirag Agarwal, Marinka Zitnik and Himabindu Lakkaraju
As Graph Neural Networks (GNNs) are increasingly employed in real-world applications, it becomes critical to ensure that the stakeholders understand the rationale behind their predictions. While several GNN explanation methods have been proposed recently, there has... View Details
Keywords: Graph Neural Networks; Explanation Methods; Mathematical Methods; Framework; Theory; Analysis
Agarwal, Chirag, Marinka Zitnik, and Himabindu Lakkaraju. "Probing GNN Explainers: A Rigorous Theoretical and Empirical Analysis of GNN Explanation Methods." Proceedings of the International Conference on Artificial Intelligence and Statistics (AISTATS) 25th (2022).
- July 2013
- Article
Ethnic Innovation and U.S. Multinational Firm Activity
By: C. Fritz Foley and William R. Kerr
This paper studies the impact that immigrant innovators have on the global activities of U.S. firms by analyzing detailed data on patent applications and on the operations of the foreign affiliates of U.S. multinational firms. The results indicate that increases in the... View Details
Keywords: Technology Transfer; Innovation; Ethnic Networks; Patents; Diasporas; Ethnicity; Multinational Firms and Management; Competitive Advantage; Research and Development; Foreign Direct Investment; Innovation and Invention; United States
Foley, C. Fritz, and William R. Kerr. "Ethnic Innovation and U.S. Multinational Firm Activity." Management Science 59, no. 7 (July 2013): 1529–1544.
- Research Summary
The Effects of Firm Size and Sales Growth Rate on Inventory Turnover Performance in the U.S. Retail Sector
We review and extend recent academic literature on the inventory turnover performance of public-listed U.S. retailers using firm-level financial data. Past research has shown that there is a large variation in the inventory turnover performance of retailers across... View Details
- 04 Aug 2010
- Working Paper Summaries
The Effect of Market Leadership in Business Process Innovation: The Case(s) of E-Business Adoption
- 24 Oct 2013
- Working Paper Summaries
When $3+$1 > $4: The Effect of Gift Salience on Employee Effort in an Online Labor Market
- 2021
- Working Paper
Does Who Helps You Impact Your Behavior? Examining the Effects of Social Interactions on Knowledge Sharing in Online Communities
By: Eunkwang Seo, Frank Nagle and Sonali K. Shah
Online communities provide vibrant forums for knowledge sharing and are increasingly being used by individual users and firms to source knowledge and create and capture value. Yet, there is much to learn about how the actions of community members affect other members,... View Details
Keywords: Online Communities; Knowledge Development; Innovation; Reciprocity; Knowledge Sharing; Networks; Innovation and Invention; Interpersonal Communication
Seo, Eunkwang, Frank Nagle, and Sonali K. Shah. "Does Who Helps You Impact Your Behavior? Examining the Effects of Social Interactions on Knowledge Sharing in Online Communities." Harvard Business School Working Paper, No. 21-026, August 2020. (Revised July 2021.)
- 12 PM – 1 PM EDT, 16 Mar 2016
- Webinars: Trending@HBS
How the Internet Became Commercial: Innovation, Privatization, and the Birth of a New Network
behavior that show up repeatedly throughout history. Greenstein will highlight the lessons of this observation, and how those lessons apply to thinking about new major technologies, such as Big Data and the Internet of Things. View Details
- 2012
- Working Paper
What Do Managers Do? Exploring Persistent Performance Differences among Seemingly Similar Enterprises
By: Robert Gibbons and Rebecca Henderson
Social networks and social groups have both been seen as important to discouraging malfeasance and supporting the global pro-social norms that underlie social order, but have typically been treated either as pure substitutes or as having completely independent effects.... View Details
Keywords: Social Norms; Social Networks; Triadic Closure; Social Groups; Group Identity; Groups and Teams; Identity; Performance Consistency; Social and Collaborative Networks; Societal Protocols; Social Media
Gibbons, Robert, and Rebecca Henderson. "What Do Managers Do? Exploring Persistent Performance Differences among Seemingly Similar Enterprises." Harvard Business School Working Paper, No. 13-020, August 2012.
- January 2022
- Article
The Private Impact of Public Data: Landsat Satellite Maps Increased Gold Discoveries and Encouraged Entry
By: Abhishek Nagaraj
How does public data shape the relative performance of incumbents and entrants in the private sector? Using a simple theoretical framework, I argue that public data reduces investment uncertainty, facilitates the discovery of new market opportunities and increases the... View Details
Keywords: Public Data; Maps; Gold; Microeconomic Behavior; Economics; Data and Data Sets; Private Sector; Market Entry and Exit; Mining
Nagaraj, Abhishek. "The Private Impact of Public Data: Landsat Satellite Maps Increased Gold Discoveries and Encouraged Entry." Management Science 68, no. 1 (January 2022): 564–582.
- 2023
- Article
Experimental Evaluation of Individualized Treatment Rules
By: Kosuke Imai and Michael Lingzhi Li
The increasing availability of individual-level data has led to numerous applications of individualized (or personalized) treatment rules (ITRs). Policy makers often wish to empirically evaluate ITRs and compare their relative performance before implementing them in a... View Details
Keywords: Causal Inference; Heterogeneous Treatment Effects; Precision Medicine; Uplift Modeling; Analytics and Data Science; AI and Machine Learning
Imai, Kosuke, and Michael Lingzhi Li. "Experimental Evaluation of Individualized Treatment Rules." Journal of the American Statistical Association 118, no. 541 (2023): 242–256.
- Article
Fast Generalized Subset Scan for Anomalous Pattern Detection
By: Edward McFowland III, Skyler Speakman and Daniel B. Neill
We propose Fast Generalized Subset Scan (FGSS), a new method for detecting anomalous patterns in general categorical data sets. We frame the pattern detection problem as a search over subsets of data records and attributes, maximizing a nonparametric scan statistic... View Details
Keywords: Pattern Detection; Anomaly Detection; Knowledge Discovery; Bayesian Networks; Scan Statistics; Analytics and Data Science
McFowland III, Edward, Skyler Speakman, and Daniel B. Neill. "Fast Generalized Subset Scan for Anomalous Pattern Detection." Art. 12. Journal of Machine Learning Research 14 (2013): 1533–1561.