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  • All HBS Web  (4,896)
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    • News  (1,102)
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Show Results For

  • All HBS Web  (4,896)
    • People  (17)
    • News  (1,102)
    • Research  (2,983)
    • Events  (26)
    • Multimedia  (55)
  • Faculty Publications  (1,288)
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  • 07 Sep 2020
  • News

Kominers’s Conundrums: A Puzzle That Spins Until It Sparks

  • 09 Feb 2017

All Hail Partisan Politics

  • Research Summary

Heteroskedasticity Autocorrelation Consistent Covariance Matrix Estimation with Wavelets

I propose a new HAC estimator based on the wavelet representation of the spectral density.  Whereas kernel-based HAC estimators [e.g. Newey West (1987) Andrews (1991)] have a fixed bandwidth, a wavelet estimator has bandwidths that vary across wavelet resolution... View Details
  • January 2025
  • Article

Everyone Steps Back?: The Widespread Retraction of Crowd-Funding Support for Minority Creators When Migration Fear Is High

By: John (Jianqui) Bai, William R. Kerr, Chi Wan and Alptug Yorulmaz
We study funding gaps on Kickstarter across multiple ethnic groups from 2009 to 2021. Scaling the concept of racially salient events, we quantify the close co-movement of minority funding gaps in crowd-funding to inflamed political rhetoric surrounding migration. The... View Details
Keywords: Crowdfunding; Prejudice and Bias; Race; Immigration; Public Opinion
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Bai, John (Jianqui), William R. Kerr, Chi Wan, and Alptug Yorulmaz. "Everyone Steps Back? The Widespread Retraction of Crowd-Funding Support for Minority Creators When Migration Fear Is High." Research Policy 54, no. 1 (January 2025).
  • 2021
  • Working Paper

Financial Flexibility and Corporate Employment

By: Rebecca Lester, Ethan Rouen and Braden Williams
We study the role of financial flexibility on COVID-19 employment actions. Using daily data from March through May 2020 for 354 of the largest U.S. employers, we find that firms facing a negative demand shock were 28.8 percentage points more likely to reduce their... View Details
Keywords: Financial Flexibility; COVID-19; Pandemic; Employment; Health Pandemics; System Shocks; Finance
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Lester, Rebecca, Ethan Rouen, and Braden Williams. "Financial Flexibility and Corporate Employment." Harvard Business School Series in Accounting and Control, No. 21-119, April 2021.
  • 2020
  • Article

Immigrant Entrepreneurship in America: Evidence from the Survey of Business Owners 2007 & 2012

By: Sari Pekkala Kerr and William R. Kerr
We study immigrant entrepreneurship in 2007 and 2012 using the Survey of Business Owners. First-generation immigrants create about 25% of new firms in America, but this share exceeds 40% in some states. Immigrant-owned firms tend to create fewer jobs than native-owned... View Details
Keywords: Job Creation; Employee Benefits; Owner Demographics; Exports; Outsourcing; Immigration; Entrepreneurship; Ownership; Demographics; Jobs and Positions; Compensation and Benefits; United States
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Kerr, Sari Pekkala, and William R. Kerr. "Immigrant Entrepreneurship in America: Evidence from the Survey of Business Owners 2007 & 2012." Art. 103918. Research Policy 49, no. 3 (April 2020).
  • February 2010
  • Other Article

The Chilling Effect of Sarbanes Oxley: A Discussion of Sarbanes-Oxley and Corporate Risk-Taking

By: Aiyesha Dey
Bargeron, Lehn, and Zutter [2009. Sarbanes–Oxley and corporate risk-taking. Journal of Accounting and Economics, forthcoming] document that as compared with non-US firms, risk-taking by publicly traded companies in the US declined after the passage of the... View Details
Keywords: Risk; Corporate Risk-taking; Risky Investments; Risk and Uncertainty
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Dey, Aiyesha. "The Chilling Effect of Sarbanes Oxley: A Discussion of Sarbanes-Oxley and Corporate Risk-Taking." Journal of Accounting & Economics 49, nos. 1-2 (February 2010): 53–57.
  • 07 Mar 2017
  • First Look

First Look at New Research, March 7

coupling metrics (direct, indirect, and cyclic coupling). Our case is based on the Google Chromium project, an open-source project that has not yet been studied for this topic. Our findings show a strong... View Details
Keywords: Sean Silverthorne
  • 22 Oct 2020
  • Working Paper Summaries

Estimating Causal Effects in the Presence of Partial Interference Using Multivariate Bayesian Structural Time Series Models

Keywords: by Fiammetta Menchetti and Iavor Bojinov
  • 05 Jun 2012
  • First Look

First Look: June 5

http://www.hbs.edu/research/pdf/12-105.pdf   Cases & Course MaterialsThe Market for Healthcare Joseph L. Bower and Michael NorrisHarvard Business School Note 312-040 This note describes the market for healthcare, primarily in the... View Details
Keywords: Sean Silverthorne
  • September 2008
  • Case

Pfizer Inc: Building an Innovation Center

By: Stefan H. Thomke and Ashok Nimgade
The case describes Pfizer's efforts to build and run an innovation center in Cambridge, Massachusetts. As the center goes through different periods of leadership and strategic models, its relationship with the corporation and other research sites is explored. The case... View Details
Keywords: Innovation and Management; Innovation Strategy; Leadership; Organizational Culture; Research and Development; Pharmaceutical Industry; Cambridge
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Thomke, Stefan H., and Ashok Nimgade. "Pfizer Inc: Building an Innovation Center." Harvard Business School Case 609-037, September 2008.
  • September 2019
  • Supplement

Adaptive Platform Trials: The Clinical Trial of the Future? (B)

By: Ariel D. Stern and Sarah Mehta
This case provides an update to the (A) case, which introduces students to adaptive platform trials, an ambitious, more efficient type of clinical trial that increases access to therapies. The (A) case centers on Dr. Brian Alexander’s efforts to launch an adaptive... View Details
Keywords: Clinical Trials; Drug Trials; Drug Testing; Cancer Trials; Glioblastoma; Platform Trials; Adaptive Trials; Adaptive Platform Trials; Health Testing and Trials; Health Care and Treatment; Financing and Loans; Business Strategy; Health Industry; United States
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Stern, Ariel D., and Sarah Mehta. "Adaptive Platform Trials: The Clinical Trial of the Future? (B)." Harvard Business School Supplement 620-001, September 2019.
  • 18 Jun 2001
  • Lessons from the Classroom

Why Leaders Need Great Books

discussion and debate among students on the complexities of leadership, in this case specifically on the question of what character really is. "Here's this young guy," says Badaracco of Jerry in the story. "He's smart. He's... View Details
Keywords: by Martha Lagace
  • 2024
  • Working Paper

Migration Fear and Minority Crowd-Funding Success: Evidence from Kickstarter

By: John (Jianqui) Bai, William R. Kerr, Chi Wan and Alptug Yorulmaz
We study racial biases on Kickstarter across multiple ethnic groups from 2009-2021. Scaling the concept of racially salient events, we quantify the close co-movement of minority funding gaps to inflamed political rhetoric surrounding migration. The racial funding gap... View Details
Keywords: Crowdfunding; Prejudice and Bias; Race; Immigration; Public Opinion
Citation
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Related
Bai, John (Jianqui), William R. Kerr, Chi Wan, and Alptug Yorulmaz. "Everyone Steps Back? The Widespread Retraction of Crowd-Funding Support for Minority Creators When Migration Fear Is High." Harvard Business School Working Paper, No. 23-046, January 2023. (Revised February 2024.)
  • 14 Aug 2017
  • Conference Presentation

A Convex Framework for Fair Regression

By: Richard Berk, Hoda Heidari, Shahin Jabbari, Matthew Joseph, Michael J. Kearns, Jamie Morgenstern, Seth Neel and Aaron Roth
We introduce a flexible family of fairness regularizers for (linear and logistic) regression problems. These regularizers all enjoy convexity, permitting fast optimization, and they span the range from notions of group fairness to strong individual fairness. By varying... View Details
Keywords: Regression Models; Machine Learning; Fairness; Framework; Mathematical Methods
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Berk, Richard, Hoda Heidari, Shahin Jabbari, Matthew Joseph, Michael J. Kearns, Jamie Morgenstern, Seth Neel, and Aaron Roth. "A Convex Framework for Fair Regression." Paper presented at the 4th Workshop on Fairness, Accountability, and Transparency in Machine Learning, Special Interest Group on Knowledge Discovery and Data Mining (SIGKDD), August 14, 2017.
  • 2015
  • Working Paper

Banks' Risk Exposures

By: Juliane Begenau, Monika Piazzesi and Martin Schneider
This paper studies U.S. banks' exposure to interest rate and credit risk. We exploit the factor structure in interest rates to represent many bank positions in terms of simple factor portfolios. This approach delivers time varying measures of exposure that are... View Details
Keywords: Risk and Uncertainty; Interest Rates; Credit; Banks and Banking; United States
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Begenau, Juliane, Monika Piazzesi, and Martin Schneider. "Banks' Risk Exposures." NBER Working Paper Series, No. 21334, July 2015.
  • July 2015
  • Article

Skilled Immigration and the Employment Structures of U.S. Firms

By: Sari Pekkala Kerr, William R. Kerr and William F. Lincoln
We study the impact of skilled immigrants on the employment structures of U.S. firms using matched employer-employee data. Unlike most previous work, we use the firm as the lens of analysis to account for a greater level of heterogeneity and the fact that many skilled... View Details
Keywords: Firms; Scientists; Engineers; Inventors; H-1B; Age; Employment; Immigration; United States
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Kerr, Sari Pekkala, William R. Kerr, and William F. Lincoln. "Skilled Immigration and the Employment Structures of U.S. Firms." Journal of Labor Economics 33, no. S1 (July 2015): S147–S186.
  • 09 Mar 2017
  • News

IDEO is Changing the Way Managers Think About Thinking

  • December 2021
  • Article

Negativity Spreads More Than Positivity on Twitter after Both Positive and Negative Political Situations

By: Jonas Paul Schöne, Brian Parkinson and Amit Goldenberg
What type of emotional language spreads further in political discourses on social media? Previous research has focused on situations that primarily elicited negative emotions, showing that negative language tended to spread further. The current project extends existing... View Details
Keywords: Negative Emotions; Emotional Influence; Emotional Resonance; Political Discourse; Emotion Contagion; Intergroup; Interactive Communication; Emotions; Government and Politics; Social Media
Citation
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Schöne, Jonas Paul, Brian Parkinson, and Amit Goldenberg. "Negativity Spreads More Than Positivity on Twitter after Both Positive and Negative Political Situations." Affective Science 2, no. 4 (December 2021): 379–390.
  • 15 Mar 2024
  • HBS Case

Let's Talk: Why It's Time to Stop Avoiding Taboo Topics at Work

financial information to a rival. But staying mum often sends the wrong message, she says. “If we can’t trust our employees, why should they trust us?” Wing asks. Family Wing cites a study that reveals men are picked for jobs over women... View Details
Keywords: by Avery Forman
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