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Show Results For
- All HBS Web
(3,417)
- People (9)
- News (720)
- Research (2,192)
- Events (38)
- Multimedia (28)
- Faculty Publications (1,297)
- 16 Jan 2024
- Video
Hypothesis Testing in Business: Null vs. Alternative
- 16 Mar 2020
- News
Moderna Announces Start of Coronavirus Vaccine Testing
- 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.)
- 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.
- 04 Apr 2010
- News
Starbucks goes upmarket with Seattle test cafe
- 31 Oct 2010
- News
Leveraging Admissions Tests to Increase Financial Savvy
- 20 Mar 2011
- News
Stress Test for the Global Supply Chain
- 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.
- 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.
- 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).
A Causal Test of the Strength of Weak Ties
The strength of weak ties is an influential social-scientific theory that stresses the importance of weak associations (e.g., acquaintance versus close friendship) in influencing the transmission of information through social networks. However, causal tests of... View Details
- 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).
- 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.
Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading
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... View Details
- 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.)
- 2018
- Working Paper
Detecting Anomalies: The Relevance and Power of Standard Asset Pricing Tests
By: Malcolm Baker, Patrick Luo and Ryan Taliaferro
The two standard approaches for identifying capital market anomalies are cross-sectional coefficient tests, in the spirit of Fama and MacBeth (1973), and time-series intercept tests, in the spirit of Jensen (1968). A new signal can pass the first test, which we label a... View Details
Keywords: Investment Management; Anomalies; Portfolio Construction; Transaction Costs; Investment; Management; Asset Pricing; Market Transactions; Cost
Baker, Malcolm, Patrick Luo, and Ryan Taliaferro. "Detecting Anomalies: The Relevance and Power of Standard Asset Pricing Tests." Working Paper, July 2018.
- Article
Design and Testing of a Mobile Health Application Rating Tool
By: David Levine, Zo Co, Lisa Newmark, Alissa Groisser, A Jay Holmgren, Jennifer Haas and David Bates
Mobile health applications (“apps”) have rapidly proliferated, yet their ability to improve outcomes for patients remains unclear. A validated tool that addresses apps’ potentially important dimensions has not been available to patients and clinicians. The objective of... View Details
Levine, David, Zo Co, Lisa Newmark, Alissa Groisser, A Jay Holmgren, Jennifer Haas, and David Bates. "Design and Testing of a Mobile Health Application Rating Tool." Art. 74. npj Digital Medicine 3 (2020).
- 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