Explore the faculty research, thought leadership, and groundbreaking philosophies that established Michigan Ross as one of the world’s top business schools.
In 2021, Assistant Professor Andreas Hagemann developed a new econometric methodology that addresses the complexities of clustered data to enhance the accuracy and reliability of empirical work in economics and related fields. Typical examples of clusters are firms, cities, or states. The central challenge is that units within clusters may influence one another or may be influenced by similar environmental factors in ways that cannot be observed. Empirical researchers know that neglecting to account for clusters can yield results where non-existent effects erroneously appear as highly significant. Hagemann's research agenda developed new tools to address this issue in challenging and empirically relevant scenarios. His work has had a substantial impact on econometric theory and empirical practice. For instance, the methodology he developed is now the standard option for clustering in the canonical implementation of quantile regression in the statistical programming language R.
In 1993, former Michigan Ross finance faculty member Victor Ng, co-authored a paper that is among the top 50 most cited papers in finance. Ng's paper defines the news impact curve, which measures how new information is incorporated into volatility estimates. His paper compares and estimates various new and existing autoregressive conditional heteroskedasticity models, including a partially nonparametric one, with daily Japanese stock return data. New diagnostic tests are presented which emphasize the asymmetry of the volatility response to news. Ng's results suggest that the Glosten, Jagannathan, and Runkle Model is the best parametric model. This path-breaking paper demonstrates the use of a new methodology to show the impact of news on stock prices, probably the most important function of financial markets.
Professor Kenneth Lieberthal was a pioneer in the practice of business school professors contributing their knowledge in public service to society. Lieberthal served as the senior director for Asia for the U.S. National Security Council during the years 1998-2000.
During that same time, Lieberthal was also special assistant to President Clinton for National Security Affairs. His core academic research findings included a seminal analysis of China's bureaucratic system, which featured a nuanced and careful delineation of the fragmented nature of China's political system in the late 20th century.
Lieberthal's research was able to explain why China, during that era, had weak policy implementation at times because of the fragmentation in its bureaucratic system. He was known for introducing U.S. policymakers to a nuanced and careful understanding of the Chinese governmental system and how it functions.
Four student-run venture funds are currently operating at Michigan Ross, more than any other business school. Collectively, these funds manage a portfolio worth more than $10 million. These funds help students learn about investing early-stage capital by making real deals with real companies and real money. The concept of student-run venture funds has been adopted by universities around the world.
The Preparation Initiative was created by Professor Emeritus Frank Yates in 2005. Yates was a champion of diversity in higher education and believed all students should have access to Michigan Ross, regardless of their preparation. The Preparation Initiative is a thriving community designed to foster the excellence and success of undergraduate business students from economically distressed backgrounds or from racial or ethnic groups historically underrepresented in business leadership. Since its inception, the Preparation Initiative has supported hundreds of students in their pursuit of a business education and now also offers mentoring opportunities for alums of the program.
Professor C.K. Prahalad was the major pioneer and advocate of the 'bottom of the pyramid' proposition that selling to the poor can simultaneously be profitable and help eradicate poverty. While appealing, the BOP proposition is also controversial. Professor Aneel Karnani was an early and prominent critic of the BOP proposition. In his 2007 article "The Mirage of Marketing to the Bottom of the Pyramid" and his 2011 book Fighting Poverty Together: Rethinking Strategies for Business, Governments, and Civil Society to Reduce Poverty, he argues for an alternative perspective. Rather than viewing the poor primarily as consumers, it is better to focus on the poor as producers and to emphasize buying from the poor. Both the private sector and government have a critical role to play in alleviating poverty. The best way to alleviate poverty is to raise the real income of the poor by providing them appropriate employment opportunities. The private sector is the best engine of job creation. The government should facilitate the creation and growth of private enterprises in labor-intensive sectors of the economy. The government should also fulfill its traditional, accepted functions of providing adequate access to public services, such as education, public health, drinkable water, sanitation, security, and infrastructure.
The paper "CONWIP: a pull alternative to kanban" by Professor Wally Hopp and coauthors, published in The International Journal of Production Research in 1990, presents an innovative production control method known as Constant Work-In-Process. CONWIP represents a notable advance over the well-known Kanban approach of the Toyota Production System that outperforms Kanban under a wide range of settings, is more adaptable to variability, and, unlike Kanban, is suited to environments with a large number of products. The path-breaking analysis of this paper spurred a significant stream of research into the performance of pull production systems that continues to this day. CONWIP has also become a standard part of the operations lexicon and has seen widespread application in industrial settings. Finally, CONWIP was an essential building block of the science of manufacturing that Wally and others introduced as Factory Physics in subsequent work.
Professor Dudley Maynard Phelps, who was part of the Michigan Business School faculty from 1924-67, studied and wrote about the distinct marketing environments and challenges in markets as diverse as Latin America, Western Europe, and the former Soviet Union, including work for the U.S. State Department. He received recognition for this work from the International Marketing Institute and was president of the American Marketing Association. In the 1980s, Professor Vern Terpstra continued this work and authored the most widely used text on international marketing and other books on the cultural environment of international business, and also published highly impactful research on country-of-origin effects with his PhD student C. Min Han. Terpstra was president of the Academy of International Business in 1970 and was invited to teach at several universities.
Currently organized by the Sanger Leadership Center, the Leadership Crisis Challenge partly came about based on Sue Ashford’s vision as the then head of the Ross Leadership Initiative and the enthusiasm of students wanting to create more venues to discuss complex and problematic business issues, such as the role of business in addressing society's most difficult problems and how businesses and other leaders might think about tensions between financial and environmental goals. Additionally, there was an interest in understanding how students, as future leaders, might best think about issues of corporate social responsibility. The LCC was intended to address those student interests by putting students in groups of four and asking them to exercise their courage, judgment, and integrity in response to a complex crisis situation and under strict time pressure. In the crisis challenge, students are confronted with a complex case for which there is no right answer or winning position – there are just tradeoffs. Built into the case are some of the most vexing questions of the day, including: What does a company “owe” the community in which it does business? Should the natural environment be sacrificed for shareholder wealth? Can companies admit wrongs in today’s aggressive legal climate? With the input of previous participants, the Net Impact club, and members of the faculty, a new case is prepared every year and overseen and judged by Michigan Ross community members, business leaders, and alums.
Professor Emerita Valerie Suslow and Adjunct Professor Margaret Levenstein have pursued a collaborative research agenda on the economics of cooperative behavior among firms, with a specific focus on cartels. Agreements between competing firms to reduce the intensity of competition can include actions such as price fixing, allocating geographic markets, allocating customers, and bid-rigging at auctions. Historically, such cooperative behavior was legal throughout the world but illegal in the United States under the Sherman Act of 1890.
The U.S. National Industrial Recovery Act of the early 1930s suspended price-fixing antitrust laws in certain circumstances. In the mid-1990s, after many decades of inattention, it became clear to competition policy enforcers that cartel activity was rampant and was likely causing substantial consumer harm. This spurred new leniency and amnesty policy tools to become available to firms. In their highly cited article "What Determines Cartel Success?" Levenstein and Suslow make the case that while cartels may break up due to cheating on the agreement, the more insurmountable problems are entry and adjustments in the face of changing economic conditions. "Breaking Up Is Hard to Do: Determinants of Cartel Duration" shows that cartels that turn to price wars to punish cheaters are not stable. Highly stable cartels draw upon a vast toolkit of mechanisms to enhance their stability and, therefore, their duration and economic harm.
Levenstein and Suslow's work has been cited in policy reports by organizations around the world, such as the Organization for Economic Cooperation and Development, the United Nations, and the World Trade Organization. They continue to explore hidden or overlooked sources of harm to consumers that may result from cartel activity, most recently turning their attention to the role played by vertical relationships between firms engaged in horizontal collusion, as well as how collusion may be facilitated by the use of a price index in long-term contracts.
"Co-creation as a revolutionary paradigm was introduced by Professors C. K. Prahalad and Venkat Ramaswamy in a series of articles published between 2000 and 2004 and an award-winning book, The Future of Competition. Their work provided a new frame of reference for jointly creating value through networked environments of increasingly digitalized experiences, going beyond goods and services, and called for a process of co-creation -- the practice of developing offerings, experiences, and unique value through ongoing interactions with customers, employees, managers, financiers, suppliers, partners, and other stakeholders. Through their work, they envisioned an individual and experience-centric view of interactive value creation and innovation.
Starting in 2005, the explosion of digital and social media, the convergence of technologies and industries, embedded intelligence, and information technology-enabled services enabled enterprises to build platforms for large-scale, ongoing interactions among the firm, its customers, and its extended network. Ramaswamy's work argued that success lies in connecting with people's experiences to generate insights and change the nature and quality of interactions. He also called for co-creation from the inside out of enterprises and their networks, as much as co-creation from the outside in, and for leaders to co-create transformative pathways.
In 2014, Ramaswamy published "The Co-Creation Paradigm", which combined the core ideas of co-creation with a call to see, think, and act differently in an interconnected world of possibilities and complex challenges to co-create a better future as individuals."
Following the decision of Dobbs v. Jackson Women's Health Organization by the U.S. Supreme Court, abortion restrictions within the United States have proliferated, and it is reasonable to expect that access to abortion services will be even further reduced in the future. The work of Associate Professor Sarah Miller investigates the impact of abortion denial using new linkages between data from the Turnaway Study and administrative records in credit reports. The Turnaway Study was a path-breaking study from the University of California San Francisco that recruited women seeking abortions, some of whom had pregnancies that just exceeded the gestational age limit of the clinic they attended and were denied abortions, others who fell just below this limit and were able to receive the abortion they sought. Miller and her co-authors found that women denied an abortion and those who received an abortion were on similar trajectories before the denial, but those denied an abortion experienced a large spike in financial problems such as unpaid bills and public records (such as bankruptcies and liens). This spike in financial problems persisted for the full six-year follow-up period that the authors had access to. The results provide evidence counter to the narrative that abortion is exclusively harmful to women who receive one (because of, for example, the regret they may feel after receiving an abortion). Instead, it suggests that giving women control over the timing of their reproduction allows them greater financial stability and self-sufficiency.
In 2002, Professor Ravi Anupindi and his co-authors published the influential paper "Coordination and Flexibility in Supply Contracts with Options" in Manufacturing & Service Operations Management. This work introduced an innovative model that integrated options into supply contracts, offering enhanced management of demand uncertainties in supply chains. The research highlighted the important potential role of options in attaining contractual flexibility to coordinate supply chain participants and improve overall efficiency. The paper influenced subsequent research on supply contract design and demand management, one of the major areas of supply chain management research in the past two decades.
Since an article she published in the Iowa Law Review in 1995, Professor Dana Muir has worked in the field of fiduciary obligation, particularly as it relates to the investment of the almost $37 trillion in U.S. retirement assets, but also as it relates to a variety of other employee benefit plans. In her 1995 article, Muir explained that the courts' attempts to define fiduciary obligation using concepts from fourteenth-century trust law were misguided. Muir has subsequently addressed fiduciary concepts in the context of investment advice, the extent to which employers serve as fiduciaries of the plans the sponsor, and, most recently, in their application to the consideration of environmental, societal, and governance factors in the investment of retirement fund assets.
In 2008, an article by Michigan Ross Professor Scott Rick changed how academics, practitioners, and the general public thought about consumers’ spending habits. The key insight was that many people who spend very little are frustrated with their behavior. They consistently spend less than they think they should, often with negative consequences for themselves and those around them. Under-spenders (“tightwads”) and over-spenders (“spendthrifts”) are two sides of the same coin: both experience conflict and distress around their spending habits. The scale Rick and colleagues developed to measure these tendencies has become widely used by marketing and psychology researchers. The tightwad-spendthrift construct attracted even more attention when Rick and colleagues demonstrated that tightwads and spendthrifts are more likely to marry one another than they are to marry someone like themselves. This “opposites attract” pattern is initially enjoyable, but eventually, as partners begin to confront a never-ending series of joint spending and saving decisions, tightwad-spendthrift differences harm relationship quality.
This research has attracted broad attention beyond the boundaries of marketing academia. It has been the topic of webinars, podcasts, and other features produced by the National Science Foundation, the American Psychological Association, the National Academy of Sciences, and the World Economic Forum. It has received years of sustained coverage from media outlets such as NPR, the New York Times, and the Wall Street Journal. Financial organizations like the CFP Board, ING, Charles Schwab, and Equifax have informed their clients and customers about the implications of this research. Most notably, in 2024, St. Martin’s Press published a mass-market book about this research, titled Tightwads and Spendthrifts: Navigating the Money Minefield in Real Relationships.
In 2002, Professor C.K. Prahalad of the Michigan Ross Business School and professor Stuart L. Hart of the University of North Carolina Kenan-Flagler Business School published the iconic article "The Fortune at the Bottom of the Pyramid" in Strategy+Business. The article suggested that "low-income markets present a prodigious opportunity for the world's wealthiest companies - to seek their fortunes and bring prosperity to the aspiring poor." Prahalad published a book with the same title five years before he passed in 2010. The article and book, with additional research and publications by Prahalad, Hart, Michigan Ross Professor Ted London, and others spawned a new business strategy for human development that has transformed into a social movement around the world known as Base of the Pyramid. The movement now includes transnationals, non-profits, social entrepreneurs, grassroots development organizations, international aid agencies, and many consulting firms dedicated to BoP strategy and implementation.