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Show Results For
- All HBS Web
(1,126)
- News (139)
- Research (810)
- Events (16)
- Multimedia (4)
- Faculty Publications (477)
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- June 2025
- Article
Riding the Passion Wave or Fighting to Stay Afloat? A Theory of Differentiated Passion Contagion
By: Emma Frank, Kai Krautter, Wen Wu and Jon M. Jachimowicz
Prior research suggests that employees benefit from highly passionate teammates because passion spreads easily from one employee to the next. We develop theory to propose that life in high-passion teams may not be as uniformly advantageous as previously assumed. We... View Details
Keywords: Passion; Emotional Contagion; Emotions; Groups and Teams; Employees; Power and Influence; Performance Improvement
Frank, Emma, Kai Krautter, Wen Wu, and Jon M. Jachimowicz. "Riding the Passion Wave or Fighting to Stay Afloat? A Theory of Differentiated Passion Contagion." Administrative Science Quarterly 70, no. 2 (June 2025): 444–495.
- Article
The Role of Differentiation Strategy in Local Telecommunication Entry and Market Evolution: 1999-2002
By: Shane Greenstein and Michael Mazzeo
Greenstein, Shane, and Michael Mazzeo. "The Role of Differentiation Strategy in Local Telecommunication Entry and Market Evolution: 1999-2002." Journal of Industrial Economics 54, no. 3 (September 2006): 323–350.
- 18 Oct 2006
- Working Paper Summaries
Racial Diversity Initiatives in Professional Service Firms: What Factors Differentiate Successful from Unsuccessful Initiatives?
- Article
Contagion and Differentiation in Unethical Behavior: The Effect of One Bad Apple on the Barrel
By: F. Gino, S. Ayal and D. Ariely
In a world where encounters with dishonesty are frequent, it is important to know if exposure to other people's unethical behavior can increase or decrease an individual's dishonesty. In Experiment 1, our confederate cheated ostentatiously by finishing a task... View Details
Gino, F., S. Ayal, and D. Ariely. "Contagion and Differentiation in Unethical Behavior: The Effect of One Bad Apple on the Barrel." Psychological Science 20, no. 3 (March 2009): 393–398.
- December 2002
- Article
Identity Salience and the Influence of Differential Activation of the Social Self-Schema on Advertising Response
By: Mark R. Forehand, Rohit Deshpandé and Americus Reed III
Forehand, Mark R., Rohit Deshpandé, and Americus Reed III. "Identity Salience and the Influence of Differential Activation of the Social Self-Schema on Advertising Response." Journal of Applied Psychology 87, no. 6 (December 2002): 1086–1099.
- March 2006
- Article
Do I Contribute More When I Trust More?: Differential Effects of Cognition- and Affect-based Trust
By: K. Y. Ng and Roy Y.J. Chua
Ng, K. Y., and Roy Y.J. Chua. "Do I Contribute More When I Trust More?: Differential Effects of Cognition- and Affect-based Trust." Management and Organization Review 2, no. 1 (March 2006): 43–66.
- 2023
- Working Paper
Crowding in Private Quality: The Equilibrium Effects of Public Spending in Education
By: Tahir Andrabi, Natalie Bau, Jishnu Das, Asim Ijaz Khwaja and Naureen Karachiwalla
We estimate the equilibrium effects of a public-school grant program administered through school councils in Pakistani villages with multiple public and private schools and clearly defined catchment boundaries. The program was randomized at the village-level, allowing... View Details
Andrabi, Tahir, Natalie Bau, Jishnu Das, Asim Ijaz Khwaja, and Naureen Karachiwalla. "Crowding in Private Quality: The Equilibrium Effects of Public Spending in Education." NBER Working Paper Series, No. 30929, February 2023.
- 01 Mar 2013
- Working Paper Summaries
Hurry Up and Wait: Differential Impacts of Congestion, Bottleneck Pressure, and Predictability on Patient Length of Stay
- 2002
- Working Paper
The Tortoise and the Hare: An Empirical Investigation of the Dynamics of Integration, Differentiation and Incumbent Adaptation
By: George Westerman, Marco Iansiti and F. Warren McFarlan
- Oct 2020
- Conference Presentation
Optimal, Truthful, and Private Securities Lending
By: Emily Diana, Michael J. Kearns, Seth Neel and Aaron Leon Roth
We consider a fundamental dynamic allocation problem motivated by the problem of securities lending in financial markets, the mechanism underlying the short selling of stocks. A lender would like to distribute a finite number of identical copies of some scarce resource... View Details
Diana, Emily, Michael J. Kearns, Seth Neel, and Aaron Leon Roth. "Optimal, Truthful, and Private Securities Lending." Paper presented at the 1st Association for Computing Machinery (ACM) International Conference on AI in Finance (ICAIF), October 2020.
- 2021
- Working Paper
Competitive Two-Part Tariffs
By: Jorge Tamayo and Guofu Tan
We study competitive two-part tariffs in a model of asymmetric duopoly firms that offer (vertically and horizontally) differentiated products. We show that the sign of the markup for each product depends on the average expected demand among all customers as well as the... View Details
Keywords: Product Differentiation; Two-part Tariffs; Marginal-cost Pricing; Cross-subsidization; Competition; Price
Tamayo, Jorge, and Guofu Tan. "Competitive Two-Part Tariffs." Harvard Business School Working Paper, No. 21-089, March 2021. (R&R American Economic Journal: Microeconomics.)
- 2018
- Working Paper
Ratcheting, Competition, and the Diffusion of Technological Change: The Case of Televisions Under an Energy Efficiency Program
By: Tomomichi Amano and Hiroshi Ohashi
In differentiated goods markets with societal implications, quality standards are commonly implemented to avoid the under-provision of innovation. Firms have clear incentives to engage in strategic behavior because policymakers use market outcomes as a benchmark in... View Details
Keywords: Product Differentiation; Energy Efficiency Standards; Ratcheting; Diffusion Of Innovation; Technological Innovation; Competition; Quality; Governing Rules, Regulations, and Reforms; Policy
Amano, Tomomichi, and Hiroshi Ohashi. "Ratcheting, Competition, and the Diffusion of Technological Change: The Case of Televisions Under an Energy Efficiency Program." Harvard Business School Working Paper, No. 19-021, September 2018.
- 2025
- Working Paper
Enhancing Treatment Effect Prediction on Privacy-Protected Data: An Honest Post-Processing Approach
By: Ta-Wei Huang and Eva Ascarza
As firms increasingly rely on customer data for personalization, concerns over privacy and regulatory compliance have grown. Local Differential Privacy (LDP) offers strong individual-level protection by injecting noise into data before collection. While... View Details
Keywords: Targeted Intervention; Conditional Average Treatment Effect Estimation; Differential Privacy; Honest Estimation; Post-processing; Analytics and Data Science; Consumer Behavior; Marketing
Huang, Ta-Wei, and Eva Ascarza. "Enhancing Treatment Effect Prediction on Privacy-Protected Data: An Honest Post-Processing Approach." Harvard Business School Working Paper, No. 24-034, December 2023. (Revised March 2025.)
- 2015
- Working Paper
Multi-Product Duopoly With Cross-Product Cost Interdependencies
By: Gary Biglaiser and Andrei Hagiu
Many multi-product firms incur a complexity fixed cost when offering different product lines in different quality tiers relative to the case when offering all products lines in the same quality tier (high or low). Such fixed costs create an interdependency between... View Details
Keywords: Multi-product Duopoly; Vertical Differentiation; Fixed Costs; Cost; Profit; Business Strategy; Duopoly and Oligopoly
Biglaiser, Gary, and Andrei Hagiu. "Multi-Product Duopoly With Cross-Product Cost Interdependencies." Harvard Business School Working Paper, No. 16-010, July 2015.
- 2014
- Other Teaching and Training Material
Marketing Reading: Brand Positioning
By: Jill Avery and Sunil Gupta
This Reading addresses the principles of brand positioning and demonstrates how companies can strategically craft powerful, resonant, and unique brand positions to help products stand out amidst the cacophony of the marketplace. Strategic brand positioning provides... View Details
Keywords: Brand Positioning; Branding; Consumer Research; Defensive Strategies; Market Positioning; Marketing; Product Differentiation; Product Positioning; Strategic Positioning; Value Proposition; Customer Relationship Management; Organizational Structure; Customer Satisfaction; Brands and Branding
Avery, Jill, and Sunil Gupta. "Marketing Reading: Brand Positioning." Core Curriculum Readings Series. Boston: Harvard Business School Publishing 8197, 2014.
- May 2012
- Background Note
Innovation Magic
By: Stefan Thomke and Jason Randal
Why do certain product and service experiences seem like magic, making them all but destined for success, while other items languish on store shelves? For a better understanding of that, perhaps there's no better place to turn to than the world of magic. Consider that... View Details
Keywords: Innovation; Product Differentiation; Experimentation; Personal Strategy ＆ Style; Innovation and Invention; Creativity; Service Operations; Product; Customer Satisfaction
Thomke, Stefan, and Jason Randal. "Innovation Magic." Harvard Business School Background Note 612-099, May 2012.
- July 2022 (Revised February 2024)
- Teaching Note
The DivaCup: Navigating Distribution and Growth
By: Ayelet Israeli
Teaching Note for HBS Case No. 519-055. When the mother-daughter founders of DivaCup set out with a mission to disrupt the menstrual care industry with an innovative product form, they initially struggled to gain legitimacy and convince retailers to carry their unique... View Details
Keywords: Female; Female Ceo; Female Entrepreneur; Female Protagonist; Health ＆ Wellness; Healthcare; Price Policies; Minimum Advertised Price; Differentiation; Positioning; Growth; Health; Health Care and Treatment; Price; Disruption; Distribution; Distribution Channels; Competitive Strategy; Competition; Growth Management; Mission and Purpose; Product Development; Product Marketing; Product Launch; Product Positioning; Advertising; Business Startups; Internet and the Web; Entrepreneurship; Social Entrepreneurship; Social Issues; Social Enterprise; Retail Industry; Medical Devices and Supplies Industry; Manufacturing Industry; Health Industry; Green Technology Industry; Education Industry; Distribution Industry; Consumer Products Industry; Canada; United States; United Kingdom
- March 2019 (Revised April 2021)
- Case
The DivaCup: Navigating Distribution and Growth
By: Ayelet Israeli
When the mother-daughter founders of DivaCup set out with a mission to disrupt the menstrual care industry with an innovative product form, they initially struggled to gain legitimacy and convince retailers to carry their unique product. Fifteen years later, the... View Details
Keywords: Female; Female Ceo; Female Entrepreneur; Female Protagonist; Health ＆ Wellness; Healthcare; Price Policies; Minimum Advertised Price; Differentiation; Positioning; Growth; Health; Health Care and Treatment; Price; Disruption; Distribution; Distribution Channels; Competitive Strategy; Competition; Growth Management; Mission and Purpose; Product Development; Product Marketing; Product Launch; Product Positioning; Advertising; Business Startups; Internet and the Web; Entrepreneurship; Social Entrepreneurship; Social Issues; Social Enterprise; Retail Industry; Medical Devices and Supplies Industry; Manufacturing Industry; Health Industry; Green Technology Industry; Education Industry; Distribution Industry; Consumer Products Industry; Canada; United States; United Kingdom
Israeli, Ayelet. "The DivaCup: Navigating Distribution and Growth." Harvard Business School Case 519-055, March 2019. (Revised April 2021.)
- August 2018 (Revised August 2018)
- Case
The De Beers Group: Launching Lightbox Jewelry for Lab-Grown Diamonds
By: Benjamin C. Esty
In May 2018, the De Beers Group shocked the diamond industry when it announced it was launching a new fashion jewelry brand of laboratory-grown (synthetic) diamonds. The reaction was swift as people sought to understand the company’s motivations: was it a “huge gamble”... View Details
Keywords: Diamonds; Differentiation; New Business; Strategy Development; Strategy Execution; Scope; Adjacency; Core; Commoditization; New Product Launch; Mining; Retail; Corporate Strategy; Business Strategy; Disruption; Value Creation; Product Launch; Segmentation; Expansion; Competitive Advantage; United States; United Kingdom
Esty, Benjamin C. "The De Beers Group: Launching Lightbox Jewelry for Lab-Grown Diamonds." Harvard Business School Case 719-408, August 2018. (Revised August 2018.)
- October 2015 (Revised November 2024)
- Case
A Challenger's Strategy: Pinar Abay at ING Bank Turkey
By: Paul Healy, Gautam Mukunda and Esel Çekin
In 2013, Pinar Abay was appointed as the CEO of ING Bank Turkey. At 34, she was the youngest bank CEO in Turkey's history. Her appointment raised eyebrows because of her youth and because her career at McKinsey had given her no day-to-day bank management experience.... View Details
Keywords: Challenger's Strategy; Culture; Innovation; Performance Management; Talent Acquisition; Differentiation; Growth; Emerging Country; Banking; Digital Banking; Alternative Channels; Leadership; Change Management; Talent and Talent Management; Organizational Culture; Emerging Markets; Transformation; Banks and Banking; Innovation and Invention; Growth and Development Strategy; Banking Industry; Turkey
Healy, Paul, Gautam Mukunda, and Esel Çekin. "A Challenger's Strategy: Pinar Abay at ING Bank Turkey." Harvard Business School Case 116-023, October 2015. (Revised November 2024.)