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Show Results For
- All HBS Web
(3,507)
- People (9)
- News (719)
- Research (2,154)
- Events (36)
- Multimedia (27)
- Faculty Publications (1,280)
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- Research Summary
Portfolio Betas Do Not Make for Better Asset Pricing Tests
Many papers claim that because using portfolios instead of individual stocks as test assets minimizes idiosyncratic volatility, their use also yields more precise estimates of risk premia. I show that while portfolio formation does lead to more efficient beta... View Details
- January 2022
- Case
Steem versus Hive: Testing Blockchain Governance
By: Shikhar Ghosh and Shweta Bagai
Keywords: Blockchain
- June 2017
- Case
Theranos: Small Volume Blood Testing (A)
By: John A. Quelch and Irene Lu
Quelch, John A., and Irene Lu. "Theranos: Small Volume Blood Testing (A)." Harvard Business School Case 517-127, June 2017.
- September 2015 (Revised May 2017)
- Case
Merieux NutriSciences: Marketing Food Safety Testing
By: John A. Quelch and Margaret L. Rodriguez
Quelch, John A., and Margaret L. Rodriguez. "Merieux NutriSciences: Marketing Food Safety Testing." Harvard Business School Case 516-024, September 2015. (Revised May 2017.)
- August 1980 (Revised June 1983)
- Supplement
Teradyne, Inc.--1979: Semiconductor Test Division (B)
Supplements the (A) case. View Details
Keywords: Semiconductor Industry
Shapiro, Benson P. "Teradyne, Inc.--1979: Semiconductor Test Division (B)." Harvard Business School Supplement 581-024, August 1980. (Revised June 1983.)
- 2019
- Article
Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading
By: Iavor I Bojinov and Neil Shephard
We define causal estimands for experiments on single time series, extending the potential outcome framework to dealing with temporal data. Our approach allows the estimation of a broad class of these estimands and exact randomization based p-values for testing causal... View Details
Bojinov, Iavor I., and Neil Shephard. "Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading." Journal of the American Statistical Association 114, no. 528 (2019): 1665–1682.
- June 23, 2021
- Article
Research: When A/B Testing Doesn't Tell You the Whole Story
By: Eva Ascarza
When it comes to churn prevention, marketers traditionally start by identifying which customers are most likely to churn, and then running A/B tests to determine whether a proposed retention intervention will be effective at retaining those high-risk customers. While... View Details
Keywords: Customer Retention; Churn; Targeting; Market Research; Marketing; Investment Return; Customers; Retention; Research
Ascarza, Eva. "Research: When A/B Testing Doesn't Tell You the Whole Story." Harvard Business Review Digital Articles (June 23, 2021).
- July – August 1996
- Article
Manage Marketing by the Customer Equity Test
By: Robert C. Blattberg and J. A. Deighton
Blattberg, Robert C., and J. A. Deighton. "Manage Marketing by the Customer Equity Test." Harvard Business Review 74, no. 4 (July–August 1996): 136–144.
- Response
Kiva as a Test of Our 'Societal Creativity'
Response to "Kiva and the Birth of Person-to-Person Microfinance" by Matt Flannery (Innovations case discussion) View Details
Austin, Robert D. "Kiva as a Test of Our 'Societal Creativity'." Innovations: Technology, Governance, Globalization 2, nos. 1/2 (Winter–Spring 2007): 57–62.
- Article
Organization Transformation as Punctuated Equilibrium: An Empirical Test
By: Michael Tushman and E. Romanelli
Tushman, Michael, and E. Romanelli. "Organization Transformation as Punctuated Equilibrium: An Empirical Test." Academy of Management Journal 37, no. 5 (October 1994): 1141–1166.
- January 1984 (Revised January 1989)
- Teaching Note
Teradyne, Inc.--1979: Semiconductor Test Division (A), Teaching Note
Teaching Note for (9-581-023). View Details
Keywords: Semiconductor Industry
- 1972
- Chapter
The Capital Asset Pricing Model: Some Empirical Tests
By: Fischer Black, Michael C. Jensen and Myron Scholes
Black, Fischer, Michael C. Jensen, and Myron Scholes. "The Capital Asset Pricing Model: Some Empirical Tests." In Studies in the Theory of Capital Markets, edited by M. C. Jensen. New York: Praeger, 1972.
- 2021
- Working Paper
Pandemic Schooling Mode and Student Test Scores: Evidence from U.S. States
By: Clare Halloran, Rebecca Jack, James C. Okun and Emily Oster
We estimate the impact of district-level schooling mode (in-person versus hybrid or distance learning) on test scores. We combine Spring 2021 state standardized test score data with comprehensive data on schooling in the 2020-21 school year across 12 states. We find... View Details
Keywords: COVID-19 Pandemic; In-person Schooling; Distance Learning; Outcomes Measurement; Health Pandemics; Education; Performance Evaluation
Halloran, Clare, Rebecca Jack, James C. Okun, and Emily Oster. "Pandemic Schooling Mode and Student Test Scores: Evidence from U.S. States." NBER Working Paper Series, No. 29497, November 2021.
- Article
Money is No Object: Testing The Endowment Effect in Exchange Goods
By: Dan Svirsky
We present a new experimental design to test whether the endowment effect exists for exchange goods, like money. We compare three groups to a baseline: one endowed with money, one endowed with chocolate coins, and one endowed with chocolate coins described as "tokens."... View Details
Svirsky, Dan. "Money is No Object: Testing The Endowment Effect in Exchange Goods." Journal of Economic Behavior & Organization 106 (October 2014): 227–234.
- February 2008 (Revised August 2008)
- Case
EXACT Sciences Corp.: Commercializing a Diagnostic Test
This case addresses the challenges of commercializing molecular diagnostics. Along the way, it explains the technology, payment system, and the measures used to assess the value of a diagnostic test. View Details
Keywords: Health Testing and Trials; Genetics; Science-Based Business; Commercialization; Biotechnology Industry
Herzlinger, Regina E. "EXACT Sciences Corp.: Commercializing a Diagnostic Test." Harvard Business School Case 308-090, February 2008. (Revised August 2008.)
- September 2012 (Revised December 2013)
- Supplement
Intel: Strategic Decisions in Locating a New Assembly and Test Plant (B)
By: Juan Alcacer and Kerry Herman
In February 2006, Intel has selected the location for its new assembly and test plant. This case discusses why this location was chosen from the list of possibilities introduced in "Intel: Strategic Decisions in Locating a New Assembly and Test Plant (A)." View Details
Keywords: Location Choices; Location Strategies; Strategy; Geographic Location; Global Strategy; Technology; Technology Industry; United States; Viet Nam
Alcacer, Juan, and Kerry Herman. "Intel: Strategic Decisions in Locating a New Assembly and Test Plant (B)." Harvard Business School Supplement 713-419, September 2012. (Revised December 2013.)
- September 16, 2022
- Article
A Causal Test of the Strength of Weak Ties
By: Karthik Rajkumar, Guillaume Saint-Jacques, Iavor I. Bojinov, Erik Brynjolfsson and Sinan Aral
The authors analyzed data from multiple large-scale randomized experiments on LinkedIn’s People You May Know algorithm, which recommends new connections to LinkedIn members, to test the extent to which weak ties increased job mobility in the world’s largest... View Details
Rajkumar, Karthik, Guillaume Saint-Jacques, Iavor I. Bojinov, Erik Brynjolfsson, and Sinan Aral. "A Causal Test of the Strength of Weak Ties." Science 377, no. 6612 (September 16, 2022).
- 1987
- Working Paper
Tests of Excess Forecast Volatility in the Foreign Exchange and Stock Markets
By: K. A. Froot
Simple regression tests that have power against the alternatives that asset prices and expected future asset returns are excessively volatile are developed and performed for the foreign exchange and stock markets. These tests have a number of advantages over... View Details
- October 6, 2020
- Article
Test Your Board's Readiness for the Post-COVID Era
By: Lynn S. Paine
Research suggests that well-run boards take the process of self-evaluation quite seriously, often using a combination of director surveys and personal interviews to assess the functioning and effectiveness of the board, its committees, and its individual members. As... View Details
Paine, Lynn S. "Test Your Board's Readiness for the Post-COVID Era." Harvard Business Review Digital Articles (October 6, 2020).
- 2003
- Other Unpublished Work
Testing Savings Product Innovations Using an Experimental Methodology
By: Nava Ashraf, Dean Karlan and Wesley Yin
Ashraf, Nava, Dean Karlan, and Wesley Yin. "Testing Savings Product Innovations Using an Experimental Methodology." ERD Technical Note, November 2003.