Publications

Educators

14 Mar 2018
Research & Ideas

Feeling Stressed? Try Sniffing Your Romantic Partner's Shirt

partner’s smell seems to reduce the physiological stress response” It was Collins’ job to turn the t-shirts inside out, fold them, and place them in individual freezer bags with the armpit section facing up. “In general, it’s not as gross... View Details

Keywords: by Carmen Nobel

2020
Article

Fast Exact Matrix Completion: A Unified Optimization Framework for Matrix Completion

By: Dimitris Bertsimas and Michael Lingzhi Li

We formulate the problem of matrix completion with and without side information as a non-convex optimization problem. We design fastImpute based on non-convex gradient descent and show it converges to a global minimum that is guaranteed to recover closely the... View Details

Keywords: Mathematical Methods

March 2010 (Revised April 2014)
Case

American Well: The Doctor Will E-See You Now

By: Elie Ofek and Ron Laufer

What is next for healthcare IT provider American Well, whose innovative Online Care technology allows physicians to deliver care to patients online in real time? Using American Well's platform, patients with non-emergency health concerns can communicate with physicians... View Details

Keywords: Entrepreneurship; Health Care and Treatment; Technological Innovation; Growth and Development Strategy; Market Entry and Exit; Service Delivery; Online Technology; Health Industry

Educators

2015
Book

Strategy Rules: Five Timeless Lessons from Bill Gates, Andy Grove, and Steve Jobs

By: David B. Yoffie and Michael A. Cusumano

The authors of the bestselling Competing on Internet Time (a Business Week top 10 book) analyze the strategies, principles, and skills of three of the most successful and influential figures in business—Bill Gates, Andy Grove, and Steve Jobs—offering... View Details

Keywords: Management; Strategy; Leadership; Information Technology; Entrepreneurship; Information Technology Industry

Research Summary

Competitive Arousal

By: Deepak Malhotra

A fourth stream of research examines a phenomenon that my co-authors and I have termed Competitive Arousal. We find that some features of competitive contexts (e.g., time pressure, perceptions of rivalry, and the presence of an audience) can heighten... View Details

Article

TDABC Cost Analysis of Ocular Disorders in an Ophthalmology Emergency Department versus Urgent Care: Clinical Experience at Massachusetts Eye and Ear

By: Robert S. Kaplan, Jonathan Chou, Mahek Shah, Amy Watts, Matthew Gardiner, Joan Miller and John I. Lowenstein

Purpose To perform a cost analysis comparison for managing common ocular disorders in an eye emergency department (ED) versus an urgent care setting using a time-driven activity-based cost model (TDABC) to assist physicians and staff in appropriate allocation of... View Details

Keywords: Time-driven Activity-based Cost Model; Emergency Room; Urgent Care Clinic; Cost; Analysis; Activity Based Costing and Management; Health Care and Treatment

2024
Working Paper

Design of Panel Experiments with Spatial and Temporal Interference

By: Tu Ni, Iavor Bojinov and Jinglong Zhao

One of the main practical challenges companies face when running experiments (or A/B tests) over a panel is interference, the setting where one experimental unit's treatment assignment at one time period impacts another's outcomes, possibly at the following time... View Details

Keywords: Research

SSRN

Article

The Impact of COVID-19 on Small Business Outcomes and Expectations

By: Alexander Bartik, Marianne Bertrand, Zoë B. Cullen, Edward L. Glaeser, Michael Luca and Christopher Stanton

To explore the impact of COVID on small businesses, we conducted a survey of more than 5,800 small businesses between March 28 and April 4, 2020. Several themes emerged. First, mass layoffs and closures had already occurred—just a few weeks into the crisis. Second, the... View Details

Keywords: COVID-19; Stimulus; CARES Act; Health Pandemics; Small Business; Surveys

December 2013 (Revised March 2016)
Case

Managing Online Reviews on TripAdvisor

By: Thales Teixeira and Leora Kornfeld

In 2013, TripAdvisor was the most visited online travel site in the world. It hosted a massive repository of information on hotels and travel services, and provided millions of reviews written by consumers. Consumers were becoming increasingly motivated to read and... View Details

Keywords: Online Word-of-mouth; Online Reviews; Hotels; Internet and the Web; Marketing Communications; Marketing Reference Programs; Digital Marketing; Customer Satisfaction; Accommodations Industry; Travel Industry

Educators

31 Jul 2013
Working Paper Summaries

Learning from Double-Digit Growth Experiences

Keywords: by Eric D. Werker

2010
Article

Measuring the Perpetrators and Funders of Typosquatting

By: Tyler Moore and Benjamin Edelman

We describe a method for identifying "typosquatting", the intentional registration of misspellings of popular website addresses. We estimate that at least 938,000 typosquatting domains target the top 3,264 .com sites, and we crawl more than 285,000 of these domains to... View Details

Keywords: Measurement and Metrics; Online Technology; Web

2015
Chapter

Leave No Slice of Genius Behind: Selecting and Developing Tomorrow's Leaders of Innovation

By: Linda A. Hill

More than ever, leaders of nearly every kind of organization view their human resources teams as essential to institutional well-being and long-term growth and sustainability. That's the central and animating theme of "The Rise of HR: Wisdom from 73 Thought Leaders," a... View Details

Keywords: Innovation; Talent Management; Talent Development And Retention; Innovation Leadership; Human Resources; Talent and Talent Management; Leadership; Leadership Development

Find at Harvard

2016
White Paper

LNG and Renewable Power: Risk and Opportunity in a Changing World

By: Jurgen Weiss, Steven Levine, Yingxia Yang and Anul Thapa

The paper explores potential long-term revenue risks to LNG exports to the extent LNG competes with alternative energy sources (such as renewables) in LNG destination markets. Given the longevity of LNG infrastructure investments, the evolution of the attractiveness of... View Details

Keywords: LNG; Renewable Energy; Revenue; Risk and Uncertainty; Opportunities

Article

Do Post-menopausal Women Provide More Care to Their Kin?: Evidence of Grandparental Caregiving from Two Large-scale National Surveys

By: Marlise Hofer, Hanne Collins, Gita D. Mishra and Mark Schaller

Drawing on the logical principles of life-history theory, it may be hypothesized that—compared to pre-menopausal women—post-menopausal women will spend more time caring for grandchildren and other kin. This hypothesis was tested in two studies, on results obtained from... View Details

Teaching Interest

Economics of Entrepreneurship and Venture Capital

Designed for Harvard College sophomores.

Course Description: Why do so many individuals choose to pursue entrepreneurship despite substantial risks? How do these entrepreneurs raise money to finance their ventures? And what is the impact of... View Details

Keywords: Entrepreneurship; Entrepreneurial Finance; Entrepreneurship And Strategy; Venture Capital

December 2022
Article

Conflicting Interests and the Effect of Fiduciary Duty: Evidence from Variable Annuities

By: Mark Egan, Shan Ge and Johnny Tang

We examine the variable annuity market to study conflicts of interest and the effect of fiduciary duty in brokerage markets. Insurers typically pay brokers higher commissions for selling more expensive annuities. Our results indicate that sales are four times as... View Details

Keywords: Variable Annuity; Brokers; Fiduciary Duty; Finance; Investment; Insurance; Conflict of Interests; Financial Services Industry; Insurance Industry; United States