Publications
Publications
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- All HBS Web
(767)
- Faculty Publications (107)
- February 2022
- Article
Borrowing to Save? The Impact of Automatic Enrollment on Debt
By: John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian and William L. Skimmyhorn
Does automatic enrollment into a retirement plan increase financial distress due to increased borrowing outside the plan? We study a natural experiment created when the U.S. Army began automatically enrolling newly hired civilian employees into the Thrift Savings Plan.... View Details
- January 2022 (Revised August 2022)
- Case
Jackie Robinson: Changing the World
By: Robert Simons and Max Saffer
This case traces the rise of Jackie Robinson from the poor streets of Pasadena, California to one of the most famous people in America after he overturned the color barrier in baseball. The case describes how as a youth he excelled at basketball, football, baseball,... View Details
- January 2022 (Revised July 2022)
- Case
Leonard Bernstein: Changing the World
By: Robert Simons and Shirley Sun
This case traces the rise of Leonard Bernstein from a middle-class family in Boston to the conductor of the New York Philharmonic Orchestra. The case describes how he studied music intensely as a young man and developed mentors to open doors for him. As his fame grew,... View Details
- 2024
- Working Paper
What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences
By: Mark Egan, Alexander MacKay and Hanbin Yang
We present an empirical model of portfolio choice that allows for the nonparametric estimation of investors' (subjective) expectations and risk preferences. Utilizing a comprehensive dataset of 401(k) plans from 2009 through 2019, we explore heterogeneity in asset... View Details
- Article
Using Fresh Starts to Nudge Increased Retirement Savings
By: John Beshears, Hengchen Dai, Katherine L. Milkman and Shlomo Benartzi
We conducted a field experiment to study the effect of framing future moments in time as new beginnings (or “fresh starts”). University employees (N=6,082) received mailings with an opportunity to choose between increasing their contributions to a savings plan... View Details
- March 2021 (Revised August 2023)
- Case
Helen Keller: Changing the World
By: Robert Simons and Shirley Sun
This case describes the rise of Helen Keller who at 19 months became deaf and blind. Refusing to be sidelined from life, Keller showed great determination in learning how to communicate with others, employing tutors and travelling to Boston to enroll in the Perkins... View Details
- March 2021 (Revised January 2024)
- Case
Ayn Rand: Changing the World
By: Robert Simons and Max Saffer
This case traces the life of Ayn Rand from Russia to Hollywood to New York City. The case describes how Rand fled communist Russia and, in reaction to the deprivations she experienced under communism, developed a philosophy idealizing free will and personal... View Details
- March 2021 (Revised June 2022)
- Case
Bill Wilson: Changing the World
By: Robert Simons and Max Saffer
This case describes the life choices of Bill Wilson, the founder of Alcoholics Anonymous. A young man with tremendous potential, Wilson hit rock bottom as a drunk. An epiphany, coupled with his personal drive, led him to build a worldwide organization that has helped... View Details
- March 2021 (Revised October 2023)
- Case
Mary Kay Ash: Changing the World
By: Robert Simons and Shirley Sun
This case describes the rise of Mary Kay, the founder of the worldwide cosmetics company. As a young single mother, Mary Kay had to overcome many obstacles to start her business and guide it to success. Today, there are more than 3.5 million Mary Kay beauty consultants... View Details
- March 2021 (Revised June 2022)
- Case
James Bryant Conant: Changing the World
By: Robert Simons and Shirley Sun
This case traces the rise of James Conant from a working-class neighborhood in Boston to president of Harvard University. The case describes how Conant, as a young man interested in chemistry and physics, embarks on studies to build his academic credentials and the... View Details
- February 2021 (Revised June 2023)
- Case
Henry Ford: Changing the World
By: Robert Simons and Max Saffer
This case traces the rise of Henry Ford from a small farm in Michigan to the controlling shareholder of the Ford Motor Company. The case describes how Ford, as young man, acquired engineering skills and the risks he took as he built and marketed one of the first... View Details
- February 2021 (Revised September 2022)
- Case
Marie Curie: Changing the World
By: Robert Simons and Shirley Sun
This case describes the rise of Marie Curie from a poor family in Poland to the pinnacle of scientific fame. The case describes how Curie, as a young woman interested in science, found a way to earn a doctorate at the Sorbonne and perform pathbreaking research on... View Details
- February 2021 (Revised July 2022)
- Case
Sarah Breedlove: Changing the World
By: Robert Simons and Max Saffer
This case describes the rise of Sarah Breedlove, who later called herself Madam C.J. Walker, from the cotton fields of Louisiana to the head of a successful, nationwide beauty company providing opportunity and hair care products to Black women. The case describes how... View Details
- February 2021 (Revised March 2025)
- Case
Walt Disney: Changing the World
By: Robert Simons and Shirley Sun
This case describes the rise of Walt Disney, founder of the worldwide entertainment company. The case describes how Disney, as a young artist, created memorable figures such as Mickey Mouse and went on to produce Academy-award-winning films and build the world’s most... View Details
- February 2021 (Revised October 2024)
- Case
Muhammad Ali: Changing The World
By: Robert Simons and Max Saffer
This case describes the rise of Cassius Clay, who later called himself Muhammad Ali, from the poor streets of Louisville, Kentucky to international fame. The case describes how Ali won a gold medal in the Olympics, three heavyweight boxing titles, and became a role... View Details
- January 2021 (Revised July 2022)
- Case
Dwight D. Eisenhower: Changing the World
By: Robert Simons and Shirley Sun
This case describes the rise of Dwight (Ike) Eisenhower from a small town in Kansas to the pinnacle of power on the world stage. During his life, Eisenhower was leader of the Allied Forces in World War II, president of Columbia University, head of NATO, and president... View Details
- August 2020
- Case
Gerald Chertavian
By: Leslie Perlow and Matthew Preble
Gerald Chertavian (HBS 1992) finds himself at a personal crossroads. It is 1999--the height of the dot com-bubble--and Chertavian and his business partners have just sold their Internet-based business for $83 million. His share of the sale’s proceeds means that he has... View Details
- March 2020 (Revised May 2021)
- Case
Employee Activism
By: Ethan Rouen and Akari Furukawa
Liz O’Sullivan, an employee at a fast-growing technology company called Clarifi, had a moral dilemma: She disagreed with Clarifi’s decision to sell its image-recognition technology to the U.S. Department of Defense for possible use in weaponized drones. This case... View Details
- March 2020 (Revised January 2023)
- Case
Nadine Vogel: Transforming the Marketplace, Workplace, and Workforce for People with Disabilities
By: Lakshmi Ramarajan, Hannah Riley-Bowles and Michael Norris
In 2019, Nadine Vogel, founder and CEO of Springboard Consulting, a firm that worked with Fortune 500 companies on issues related to disability and their workforce, faced the decision of the best path forward to grow her small company. Should she build more and better... View Details
- January 2020
- Case
Ninja: Which Platform Wins Esports' Biggest Star?
By: Anita Elberse and Michal T. Leszczynski
It is July 2019, and the business of esports and gaming is booming. Tyler Blevins—better known as Ninja—has risen to stardom playing the immensely popular shooter game Fortnite. He has become the most followed streamer in the world and, helped by his management company... View Details