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Show Results For
- All HBS Web
(192)
- News (12)
- Research (157)
- Events (2)
- Multimedia (1)
- Faculty Publications (67)
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- Article
Mitigating Bias in Adaptive Data Gathering via Differential Privacy
By: Seth Neel and Aaron Leon Roth
Data that is gathered adaptively—via bandit algorithms, for example—exhibits bias. This is true both when gathering simple numeric valued data—the empirical means kept track of by stochastic bandit algorithms are biased downwards—and when gathering more complicated... View Details
Neel, Seth, and Aaron Leon Roth. "Mitigating Bias in Adaptive Data Gathering via Differential Privacy." Proceedings of the International Conference on Machine Learning (ICML) 35th (2018).
- September 2007
- Article
Collaborative Brokerage, Generative Creativity, and Creative Success
Analyzing data on utility patents from 1975 to 2002 in the careers of 35,400 collaborative inventors, this study examines the influence of brokered versus cohesive collaborative social structures on an individual's creativity. We test the hypothesis that... View Details
Keywords: Collaborative Innovation and Invention; Patents; Personal Development and Career; Creativity; Power and Influence; Social and Collaborative Networks
Fleming, Lee, and Santiago Mingo. "Collaborative Brokerage, Generative Creativity, and Creative Success." Administrative Science Quarterly 52, no. 3 (September 2007).
- December 2009
- Article
Estimation and Empirical Properties of a Firm-Year Measure of Accounting Conservatism
By: Mozaffar N. Khan and Ross L. Watts
We estimate a firm-year measure of accounting conservatism, examine its empirical properties as a metric, and illustrate applications by testing new hypotheses that shed further light on the nature and effects of conservatism. The results are consistent with the... View Details
Khan, Mozaffar N., and Ross L. Watts. "Estimation and Empirical Properties of a Firm-Year Measure of Accounting Conservatism." Journal of Accounting & Economics 48, nos. 2-3 (December 2009): 132–150.
- 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
- Research Summary
4. Collaborative Brokerage, Generative Creativity, and Creative Success
Joint work with Lee Fleming (Technology and Operations Management Unit, Harvard Business School) and David Chen (Doctoral Candidate, Harvard Business School and Harvard School of... View Details
- 12 Oct 1999
- Research & Ideas
Decoding the DNA of the Toyota Production System
specification, it is establishing a hypothesis that is then tested through action. This approach — the scientific method—is not imposed on workers, it's ingrained in them. And it stimulates them to engage in... View Details
- January 2010
- Article
Does Public Ownership of Equity Improve Earnings Quality?
We compare the quality of accounting numbers produced by two types of public firms-those with publicly traded equity and those with privately held equity that are nonetheless considered public by virtue of having publicly traded debt. We develop and test two... View Details
- Article
Physician-Induced Demand for Medical Care
By: Jerry R. Green
This paper addresses the theoretical models designed to ascertain the existence of a variable level of physicians' activity in shifting the demand of their patients. Two basic approaches are followed: equilibrium models of the demand for health care, and disequilibrium... View Details
Keywords: Physicians; Economic Equilibrium; Monopolistic Competition; Economic Competition; Medical Care
Green, Jerry R. "Physician-Induced Demand for Medical Care." Special Issue on National Bureau of Economic Research Conference on the Economics of Physician and Patient Behavior. Journal of Human Resources 13, Suppl. (1978).
- Article
Ownership Dilemmas: The Case of Finders Versus Landowners
By: Peter DiScioli, Rachel Karpoff and Julian De Freitas
People sometimes disagree about who owns which objects, and these ownership dilemmas can
lead to costly disputes. We investigate the cognitive mechanisms underlying people’s judgments
about finder versus landowner cases, in which a person finds an object on someone... View Details
Keywords: Ownership Dilemma; Finders; Psychology And Law; Ownership; Property; Law; Social Psychology
DiScioli, Peter, Rachel Karpoff, and Julian De Freitas. "Ownership Dilemmas: The Case of Finders Versus Landowners." Cognitive Science 41, no. S3 (2017): 502–522.
- August 2008
- Article
Economic Links and Predictable Returns
By: Lauren Cohen and Andrea Frazzini
This paper finds evidence of return predictability across economically linked firms. We test the hypothesis that in the presence of investors subject to attention constraints, stock prices do not promptly incorporate news about economically related firms, generating... View Details
Keywords: Economics; Price; Assets; Analytics and Data Science; Customers; Stocks; Equity; Strategy; Investment Return; Forecasting and Prediction
Cohen, Lauren, and Andrea Frazzini. "Economic Links and Predictable Returns." Journal of Finance 63, no. 4 (August 2008). (Winner of Smith Breeden Prize for the Best Paper Published in the Journal of Finance in Asset Pricing (Distinguished Paper) 2008. Winner of Chicago Quantitative Alliance Academic Paper Competition. First Prize presented by Chicago Quantitative Alliance. Winner of BSI Gamma Foundation Research Grant presented by BSI Gamma Foundation.)
- Research Summary
An Uncomfortable Predictability Paradox
In predictive regressions, we test the null hypothesis that a predictor has no information about expected returns, i.e. beta equals zero. However, the literature neglects to recognize that we are testing a joint hypothesis. The maintained... View Details
- September 2022
- Article
Health Externalities and Policy: The Role of Social Preferences
By: Laura Alfaro, Ester Faia, Nora Lamersdorf and Farzad Saidi
Social preferences facilitate the internalization of health externalities, for example by reducing mobility during a pandemic. We test this hypothesis using mobility data from 258 cities worldwide alongside experimentally validated measures of social preferences.... View Details
Keywords: Social Preferences; Pandemics; Mobility; Health Externalities; Mitigation Policies; Health Pandemics; Cooperation; Behavior; Policy
Alfaro, Laura, Ester Faia, Nora Lamersdorf, and Farzad Saidi. "Health Externalities and Policy: The Role of Social Preferences." Management Science 68, no. 9 (September 2022): 6751–6761.
- 2008
- Working Paper
Welfare Payments and Crime
By: C. Fritz Foley
This paper tests the hypothesis that the timing of welfare payments affects criminal activity. Analysis of daily reported incidents of major crimes in twelve U.S. cities reveals an increase in crime over the course of monthly welfare payment cycles. This increase... View Details
Foley, C. Fritz. "Welfare Payments and Crime." NBER Working Paper Series, No. 14074, June 2008.
- March 2012
- Article
The Hierarchical Face: Higher Rankings Lead to Less Cooperative Looks
By: Patricia Chen, Christopher G. Myers, Shirli Kopelman and Stephen M. Garcia
In 3 studies, we tested the hypothesis that the higher ranked an individual's group is, the less cooperative the facial expression of that person is judged to be. Study 1 established this effect among business school deans, with observers rating individuals from higher... View Details
Chen, Patricia, Christopher G. Myers, Shirli Kopelman, and Stephen M. Garcia. "The Hierarchical Face: Higher Rankings Lead to Less Cooperative Looks." Journal of Applied Psychology 97, no. 2 (March 2012): 479–486.
- January 1986
- Article
Social Influences on Creativity: The Effects of Contracted-For Reward
By: T. M. Amabile, B. A. Hennessey and B. S. Grossman
Three studies, with 195 5–11 yr olds and 60 female undergraduates, tested the hypothesis that explicitly contracting to do an activity in order to receive a reward would have negative effects on creativity, but receiving no reward or only a noncontracted-for reward... View Details
Amabile, T. M., B. A. Hennessey, and B. S. Grossman. "Social Influences on Creativity: The Effects of Contracted-For Reward." Journal of Personality and Social Psychology 50, no. 1 (January 1986): 14–23.
- August 2010
- Article
Sell-Side School Ties
By: Lauren H. Cohen, Christopher J. Malloy and Andrea Frazzini
We study the impact of social networks on agents' ability to gather superior information about firms. Exploiting novel data on the educational backgrounds of sell-side equity analysts and senior officers of firms, we test the hypothesis that analysts' school ties to... View Details
Keywords: Investment Return; Investment Portfolio; Corporate Disclosure; Governing Rules, Regulations, and Reforms; Knowledge Acquisition; Social and Collaborative Networks
Cohen, Lauren H., Christopher J. Malloy, and Andrea Frazzini. "Sell-Side School Ties." Journal of Finance 65, no. 4 (August 2010): 1409–1437. (Winner of Smith Breeden Prize for the Best Paper Published in the Journal of Finance in Asset Pricing (Distinguished Paper) 2010.)
- 18 Feb 2010
- Working Paper Summaries
The Mirroring Hypothesis: Theory, Evidence and Exceptions
Keywords: by Lyra Colfer & Carliss Y. Baldwin
- Article
Do Post-menopausal Women Provide More Care to Their Kin?: Evidence of Grandparental Caregiving from Two Large-scale National Surveys
By: Marlise Hofer, Hanne Collins, Gita D. Mishra and Mark Schaller
Drawing on the logical principles of life-history theory, it may be hypothesized that—compared to pre-menopausal women—post-menopausal women will spend more time caring for grandchildren and other kin. This hypothesis was tested in two studies, on results obtained from... View Details
Hofer, Marlise, Hanne Collins, Gita D. Mishra, and Mark Schaller. "Do Post-menopausal Women Provide More Care to Their Kin?: Evidence of Grandparental Caregiving from Two Large-scale National Surveys." Evolution and Human Behavior 40, no. 4 (July 2019): 355–364.
- September 2022
- Article
A Spanner in the Works: Category-Spanning Entrants and Audience Valuation of Incumbents
By: Rory M. McDonald and Ryan T. Allen
Previous work has examined how audiences evaluate category-spanning organizations, but little is known about how their entrance affects evaluations of other, proximate organizations. We posit that the emergence of category-spanning entrants signals the advent of an... View Details
Keywords: Emerging Industries; Industry Dynamics; Organization And Management Theory; Technology Strategy; Technology And Innovation Management; Entrepreneurship; Information Technology; Strategy; Management; Theory; Innovation and Management
McDonald, Rory M., and Ryan T. Allen. "A Spanner in the Works: Category-Spanning Entrants and Audience Valuation of Incumbents." Strategy Science 7, no. 6 (September 2022): 190–209.
- June 2013
- Article
Unconscious Thought Reduces Intrusion Development: A Replication and Extension
By: Julie Krans, Dorte Janecko and Maarten W. Bos
Background and Objectives: Intrusive images after a traumatic event, a hallmark feature of post-traumatic stress disorder, are suggested to develop because the trauma memory is disorganized and not integrated into autobiographical memory. Unconscious Thought... View Details
Krans, Julie, Dorte Janecko, and Maarten W. Bos. "Unconscious Thought Reduces Intrusion Development: A Replication and Extension." Journal of Behavior Therapy and Experimental Psychiatry 44, no. 2 (June 2013): 179–185.