Publications
Publications
Show Results For
- All HBS Web
(3,526)
- Faculty Publications (763)
Testing
→
- March–April 2020
- Article
Avoid the Pitfalls of A/B Testing
By: Iavor I. Bojinov, Guillaume Sait-Jacques and Martin Tingley
Online experiments measuring whether “A,” usually the current approach, is inferior to “B,” a proposed improvement, have become integral to the product-development cycle, especially at digital enterprises. But often firms make serious mistakes in conducting these... View Details
- March–April 2020
- Article
Building A Culture of Experimentation
By: Stefan Thomke
Why don’t organizations test more? After examining this question for several years, I can tell you that the central reason is culture. As companies try to scale up their experimentation capacity, they often find that the obstacles are not tools and technology but... View Details
- March 2020
- Article
Diagnosing Missing Always at Random in Multivariate Data
By: Iavor I. Bojinov, Natesh S. Pillai and Donald B. Rubin
Models for analyzing multivariate data sets with missing values require strong, often assessable, assumptions. The most common of these is that the mechanism that created the missing data is ignorable—a twofold assumption dependent on the mode of inference. The first... View Details
- March 2020
- Article
Organizing Knowledge Production Teams Within Firms for Innovation
By: Vikas A. Aggarwal, David H. Hsu and Andy Wu
How should firms organize their pool of inventive human capital for firm-level innovation? While access to diverse knowledge may aid knowledge recombination, which can facilitate innovation, prior literature has focused primarily on one way of achieving that: diversity... View Details
- 2020
- Book
The Power of Experiments: Decision-Making in a Data-Driven World
By: Michael Luca and Max H. Bazerman
Have you logged into Facebook recently? Searched for something on Google? Chosen a movie on Netflix? If so, you've probably been an unwitting participant in a variety of experiments—also known as randomized controlled trials—designed to test the impact of changes to an... View Details
- February 2020
- Teaching Note
Theranos: Who Has Blood on Their Hands? (A) and (B)
By: Nien-he Hsieh and Christina R. Wing
Teaching Note for HBS Nos. 619-039 and 320-091. View Details
- 2020
- Working Paper
The Effects of Hierarchy on Learning and Performance in Business Experimentation
By: Sourobh Ghosh, Stefan Thomke and Hazjier Pourkhalkhali
Do senior managers help or hurt business experiments? Despite the widespread adoption of business experiments to guide strategic decision-making, we lack a scholarly understanding of what role senior managers play in firm experimentation. Using proprietary data of live... View Details
- February 2020
- Supplement
Theranos: Who Has Blood on Their Hands? (B)
By: Nien-he Hsieh, Christina R. Wing and John Masko
This supplemental case tracks the results of the Colman and Taubman-Dye class action suit against Theranos as well as Theranos’ other legal challenges and chronicles the final demise of the company in 2019. View Details
- February 2020
- Article
Being 'Good' or 'Good Enough': Prosocial Risk and the Structure of Moral Self-regard
By: Julian Zlatev, Daniella M. Kupor, Kristin Laurin and Dale T. Miller
The motivation to feel moral powerfully guides people’s prosocial behavior. We propose that people’s efforts to preserve their moral self-regard conform to a moral threshold model. This model predicts that people are primarily concerned with whether their... View Details
- 2020
- Book
Experimentation Works: The Surprising Power of Business Experiments
By: Stefan Thomke
Don’t fly blind. See how the power of experiments works for you. When it comes to improving customer experiences, trying out new business models, or developing new products, even the most experienced managers often get it wrong. They discover that intuition,... View Details
- February 2020
- Article
Why Prosocial Referral Incentives Work: The Interplay of Reputational Benefits and Action Costs
By: Rachel Gershon, Cynthia Cryder and Leslie K. John
While selfish incentives typically outperform prosocial incentives, in the context of customer referral rewards, prosocial incentives can be more effective. Companies frequently offer “selfish” (i.e., sender-benefiting) referral incentives, offering customers financial... View Details
- 2019
- Working Paper
Industrial Change, the Boundary of the Firm, and Racial Employment Segregation
By: John-Paul Ferguson and Rembrand Koning
Racial employment segregation between large workplaces in America has grown over the last generation. We know little about how changes in patterns of employment by economic sector have contributed to this growth, though. While there are many stylized narratives about... View Details
Keywords: Workplace Segregation; Firm Boundaries; Organizations; Employees; Segmentation; Race; Change; United States
- Article
Beyond Emotional Similarity: The Role of Situation-specific Motives
By: Amit Goldenberg, David Garcia, Eran Halperin, Jamil Zaki, Danyang Kong, Golijeh Golarai and James J. Gross
It is well established that people often express emotions that are similar to those of other group members. However, people do not always express emotions that are similar to other group members, and the factors that determine when similarity occurs are not yet clear.... View Details
- December 2019
- Article
It Helps to Ask: The Cumulative Benefits of Asking Follow-up Questions
By: Michael Yeomans, Alison Wood Brooks, Karen Huang, Julia A. Minson and Francesca Gino
In a recent article published in Journal of Personality and Social Psychology (JPSP; Huang, Yeomans, Brooks, Minson, & Gino, 2017), we reported the results of 2 experiments involving “getting acquainted” conversations among strangers and an observational field... View Details
- 2019
- Article
Overcoming Cultural Resistance to Open Source Innovation
By: John Winsor, Jin Hyun Paik, Michael Tushman and Karim R. Lakhani
Purpose: This article offers insight on how to effectively help incumbent organizations prepare for global business shifts to open source and digital business models.
Design/methodology/approach: Discussion related to observation, experience and case studies... View Details
Design/methodology/approach: Discussion related to observation, experience and case studies... View Details
- December 2019
- Article
The Impact of Increasing Search Frictions on Online Shopping Behavior: Evidence from a Field Experiment
By: Donald Ngwe, Kris J. Ferreira and Thales Teixeira
Many online stores are designed such that shoppers can easily access any available discounted products. We propose that deliberately increasing search frictions by placing small obstacles to locating discounted items can improve online retailers’ margins and even... View Details
- 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
- Article
The Role of Interactivity in Local Differential Privacy
By: Matthew Joseph, Jieming Mao, Seth Neel and Aaron Leon Roth
We study the power of interactivity in local differential privacy. First, we focus on the difference between fully interactive and sequentially interactive protocols. Sequentially interactive protocols may query users adaptively in sequence, but they cannot return to... View Details
- October 2019 (Revised April 2020)
- Background Note
Note on Funding Deep Tech Startups
By: Karim Lakhani, Peter Barrett and Noubar Afeyan
This Background Note provides essential information on funding deep technologies—those technologies that were inherently capital intensive, time consuming, risky, and potentially disruptive. Both dilutive and non-dilutive sources of investment are highlighted, along... View Details
Keywords: Entrepreneurship; Energy; Venture Capital; Corporate Finance; Initial Public Offering; Investment; Health Testing and Trials; Innovation and Invention; Technological Innovation; Intellectual Property; Product Design; Product Development; Information Technology; Research and Development; Risk and Uncertainty; Technology Industry; Biotechnology Industry; United States; North America; Europe; Asia
- October 2019
- Case
Regtech at HSBC
By: Aiyesha Dey, Jonas Heese and James Weber
Mark Cooke, Global Head of Operational Risk, needed to decide between a traditional regulatory control system and a new regtech system to manage non-financial risks.
Non-financial risks failures such as money laundering and tax evasion had cost HSBC billions of... View Details