Visual summary of operating lessons from Michael Kremer.

Lessons from Michael Kremer

Economist Michael Kremer shifted the study of poverty toward measuring what actually works. He designed Advance Market Commitments to fund vaccines and developed the O-Ring theory to explain how small errors bottleneck entire economies. This profile covers his use of field experiments to solve practical problems in health, agriculture, and institutional design.

Part 1: The O-Ring Theory of Economic Development

  1. On the fragility of complex production: "Modern production processes consist of a sequence of tasks where a single failure can destroy the value of the entire project, much like the O-ring on the Space Shuttle Challenger." — Source: [Quarterly Journal of Economics]
  2. On skill sorting: "Because production relies on the proficiency of all tasks, firms have an incentive to match high-skill workers together." — Source: [Quarterly Journal of Economics]
  3. On wage inequality: "Wages rise steeply with skill levels because highly proficient workers are exponentially more productive when matched with equally proficient peers." — Source: [Quarterly Journal of Economics]
  4. On development traps: "Countries can get stuck in low-skill equilibria; if a nation lacks a critical mass of skilled workers, firms will avoid investing in complex, high-value production." — Source: [Quarterly Journal of Economics]
  5. On the multiplier effect of skill: "A high-skill economy benefits from a multiplier effect, where the collective proficiency of the workforce drives output vastly higher than the sum of individual contributions." — Source: [Quarterly Journal of Economics]
  6. On bottlenecks in manufacturing: "A highly skilled worker paired with an unskilled worker who makes frequent mistakes will find their productivity bottlenecked by their partner’s errors." — Source: [American Economic Association]
  7. On international trade: "Opening up to international markets allows developing countries to import better technology and integrate into global supply chains, effectively bypassing local skill bottlenecks." — Source: [Quarterly Journal of Economics]
  8. On capital accumulation: "Capital will not flow to countries with low-skill labor forces because the complementarity between tasks makes physical capital investments less profitable there." — Source: [Quarterly Journal of Economics]
  9. On product quality: "Rich countries specialize in producing more complex goods rather than simply producing larger quantities of the same goods as poor countries." — Source: [Quarterly Journal of Economics]

Part 2: Experimental Economics and Field Work

  1. On the experimental approach: "The experimental approach is characterized by dividing broad issues into smaller, more manageable questions that can be rigorously tested." — Source: [NobelPrize.org]
  2. On testing economic theory: "Field experiments allow economists to move beyond observational data to directly test mechanisms and isolate causal relationships in real-world settings." — Source: [NobelPrize.org]
  3. On local coordination: "The idea of local authorities being an obstacle is a misconception; coordinating with local stakeholders provides valuable, practical perspectives." — Source: [Conversations with Tyler]
  4. On evidence-based policy: "When governments and non-profits base their decisions on randomized controlled trials, they can direct scarce resources toward the most cost-effective interventions." — Source: [Poverty Action Lab]
  5. On iterating interventions: "Like A/B testing in the tech industry, development interventions must be continually tested and refined to discover what actually works on the ground." — Source: [NobelPrize.org]
  6. On unanticipated results: "Experiments often yield surprising results that contradict both common sense and established economic theory, highlighting the need for empirical validation." — Source: [Poverty Action Lab]
  7. On scaling success: "Identifying a successful intervention in one context is only the first step; the next challenge is understanding whether and how it scales to different populations." — Source: [American Economic Review]
  8. On the role of NGOs: "Non-governmental organizations are often more willing than governments to serve as testing grounds for unproven but potentially high-impact social programs." — Source: [Poverty Action Lab]
  9. On the evolution of economics: "The shift toward field experiments has transformed development economics from a theoretical discipline into an applied, policy-oriented science." — Source: [NobelPrize.org]

Part 3: Health, Deworming, and Externalities

  1. On school absenteeism: "A school-based mass deworming treatment in Kenya led to a 25 percent reduction in school absenteeism among children." — Source: [Econometrica]
  2. On treatment externalities: "Treating children for worms benefits even the untreated children in the same community by reducing the overall prevalence and transmission of the parasite." — Source: [Econometrica]
  3. On long-term economic gains: "Children who received additional years of deworming treatment experienced a 13 percent increase in hourly earnings as adults." — Source: [Poverty Action Lab]
  4. On cost-effective public health: "Delivering deworming medication through existing school infrastructure makes it one of the most cost-effective ways to increase school participation." — Source: [Evidence Action]
  5. On user fees in health: "Introducing even small copayments for preventative health products like deworming pills or mosquito nets drastically reduces their adoption among the poor." — Source: [Quarterly Journal of Economics]
  6. On consumption improvements: "Long-term follow-ups of deworming recipients showed a 14 percent increase in consumption expenditures two decades after the initial treatment." — Source: [PNAS]
  7. On scaling deworming: "The evidence from Kenya directly inspired the Deworm the World Initiative, which now reaches hundreds of millions of children globally." — Source: [Evidence Action]
  8. On evaluating public goods: "Standard economic evaluations often underestimate the value of health interventions because they fail to account for positive epidemiological externalities." — Source: [Econometrica]
  9. On health as human capital: "Improving child health is a fundamental investment in a country's future human capital and economic capacity." — Source: [American Economic Association]

Part 4: Advance Market Commitments and Vaccine Development

  1. On the hold-up problem: "Pharmaceutical companies historically lacked incentives to invest in vaccines for neglected diseases because they feared developing countries could not afford them once created." — Source: [Center for Global Development]
  2. On market creation: "An Advance Market Commitment functions as a pull mechanism, guaranteeing a minimum price for a vaccine that meets specific efficacy standards." — Source: [Center for Global Development]
  3. On sinking R&D costs: "By creating a predictable future market, donors can encourage private firms to sink the massive upfront costs required for vaccine research and manufacturing." — Source: [Center for Global Development]
  4. On the pneumococcal pilot: "The $1.5 billion pilot AMC for the pneumococcal vaccine successfully accelerated its development, ultimately saving an estimated 700,000 lives." — Source: [Gavi, the Vaccine Alliance]
  5. On at-risk investments: "Making at-risk investments in vaccine manufacturing capacity prior to clinical approval can save billions of dollars and significantly accelerate distribution during a crisis." — Source: [IMF Podcasts]
  6. On optimal AMC design: "The structure of an AMC should vary depending on the product’s stage of development, balancing the need to incentivize innovation with the goal of securing low long-term prices." — Source: [American Economic Review]
  7. On late-stage vs. early-stage innovation: "Pull mechanisms are particularly effective for late-stage development where the desired product can be clearly specified in advance." — Source: [Quarterly Journal of Economics]
  8. On adapting AMCs for COVID-19: "The core principles of advance market commitments were instrumental in funding and expediting the rapid production of COVID-19 vaccines." — Source: [National Bureau of Economic Research]
  9. On global public goods: "Mechanisms that stimulate private investment in global public goods can deliver returns on investment that vastly exceed standard aid programs." — Source: [Center for Global Development]

Part 5: Education and Human Capital

  1. On input-based education policy: "Simply providing more textbooks or reducing class sizes in developing countries often fails to improve test scores if the underlying pedagogical approach remains unchanged." — Source: [American Economic Journal]
  2. On tracking and peer effects: "Grouping students by initial achievement levels can benefit both high- and low-achieving students by allowing teachers to target their instruction more effectively." — Source: [American Economic Review]
  3. On teacher incentives: "Tying teacher pay to student test scores can increase attendance and test-taking, but it also risks encouraging teachers to teach narrowly to the test." — Source: [Poverty Action Lab]
  4. On remedial education: "Targeted remedial education programs, even when delivered by young, informally trained tutors, can substantially improve basic literacy and numeracy skills." — Source: [Quarterly Journal of Economics]
  5. On health as an educational input: "Often, the cheapest way to improve educational outcomes is not through traditional educational inputs, but by treating highly prevalent diseases that keep kids out of school." — Source: [Econometrica]
  6. On information asymmetries in schooling: "Providing parents with accurate information about the economic returns to education can significantly increase school enrollment and attendance." — Source: [Poverty Action Lab]
  7. On contract teachers: "Hiring local contract teachers, who face contract renewal based on performance, can sometimes deliver better student outcomes than relying solely on tenured civil-service teachers." — Source: [Poverty Action Lab]
  8. On the illusion of free education: "Even when schooling is technically free, the hidden costs of uniforms, supplies, and lost child labor can be prohibitive for the poorest families." — Source: [American Economic Review]
  9. On scalable education models: "Standardized, highly structured pedagogical programs have shown the ability to deliver consistent learning gains across varying contexts when implemented at scale." — Source: [Development Innovation Lab]

Part 6: Agricultural Technology and Smallholder Farmers

  1. On agricultural advice: "Delivering customized, science-based agricultural advice directly to smallholder farmers via mobile phones is a low-cost way to significantly boost crop yields." — Source: [Precision Development]
  2. On digital extension services: "Digital extension can bypass the logistical bottlenecks of traditional in-person agricultural training, reaching millions of farmers at a fraction of the cost." — Source: [Development Innovation Lab]
  3. On underutilization of fertilizer: "Despite high potential returns, many smallholder farmers fail to use fertilizer due to behavioral barriers and a lack of reliable information." — Source: [American Economic Review]
  4. On human-centered weather forecasting: "Translating complex meteorological data into actionable, localized advice helps farmers make better decisions about when to plant and apply inputs." — Source: [Development Innovation Lab]
  5. On technology adoption barriers: "The gap between the social need for resilient crops and the commercial incentives for R&D leaves poor farmers vulnerable to climate and pest shocks." — Source: [Poverty Action Lab]
  6. On input subsidies: "Time-limited subsidies offered just after harvest, when farmers have cash on hand, can significantly increase the adoption of agricultural inputs." — Source: [American Economic Review]
  7. On risk and experimentation: "Farmers in developing nations operate at the margin of subsistence, making them rationally hesitant to risk their crop on unproven agricultural technologies." — Source: [Poverty Action Lab]
  8. On mobile money and agriculture: "The integration of mobile money platforms reduces transaction costs, enabling farmers to save for inputs and better manage seasonal cash flow." — Source: [Precision Development]
  9. On soil testing: "Providing farm-specific soil testing results can help farmers optimize their fertilizer use, shifting from generic recommendations to targeted nutrient management." — Source: [Precision Development]
  10. On agricultural pull mechanisms: "The AMC model used for vaccines can be adapted to agriculture, guaranteeing markets for innovations like drought-resistant seeds tailored to low-income regions." — Source: [Development Innovation Lab]

Part 7: Behavioral Economics in Development

  1. On present bias: "Present-biased preferences, or procrastination, explain why individuals often fail to make small, immediate investments that yield large future returns." — Source: [American Economic Review]
  2. On commitment devices: "Offering farmers the option to purchase fertilizer vouchers immediately after harvest acts as a commitment device, overcoming the temptation to spend the cash elsewhere." — Source: [American Economic Review]
  3. On nudges in public health: "Small behavioral nudges, such as text message reminders, can significantly improve adherence to medical regimens and water treatment protocols." — Source: [Poverty Action Lab]
  4. On the psychology of pricing: "The demand for preventive health products in developing countries is highly elastic around zero; charging even a nominal fee signals a transaction rather than an entitlement, drastically reducing uptake." — Source: [Quarterly Journal of Economics]
  5. On bounded rationality: "Development programs must be designed with the understanding that people have limited cognitive bandwidth and cannot always process complex information perfectly." — Source: [Conversations with Tyler]
  6. On default options: "Setting the default option to enrollment in savings or health programs dramatically increases participation, leveraging inertia for positive outcomes." — Source: [Poverty Action Lab]
  7. On peer effects and behavior: "An individual's likelihood of adopting a new technology or behavior is strongly influenced by the adoption decisions of their immediate social network." — Source: [American Economic Review]
  8. On the cost of complexity: "Simplifying the application process for social programs is often more effective at increasing uptake than increasing the financial value of the benefit itself." — Source: [Poverty Action Lab]
  9. On self-control in saving: "Without formal banking, people in developing economies often rely on informal rotating savings and credit associations to enforce self-control in saving." — Source: [Quarterly Journal of Economics]
  10. On rational procrastination: "When the cost of making a decision is immediate but the benefits are delayed and uncertain, procrastination is a predictable behavioral response." — Source: [American Economic Review]

Part 8: Innovation Policy and Meta-Institutions

  1. On meta-innovations: "Meta-innovations are new social institutions or mechanisms explicitly designed to accelerate the pace of scientific and technological progress." — Source: [NobelPrize.org]
  2. On shaping innovation: "We must actively shape the direction of innovation to ensure it addresses human needs, such as expanding access to clean water, rather than solely serving affluent markets." — Source: [Effective Altruism]
  3. On the cost-effectiveness of innovation: "Investing in innovation is highly cost-effective because the upfront costs of development are relatively low compared to the massive impacts achieved at scale." — Source: [Development Innovation Lab]
  4. On economists as founders: "Academic economists have a unique opportunity to act as founders, designing and launching institutions that directly apply economic theory to social problems." — Source: [Conversations with Tyler]
  5. On open science: "Promoting open science and data sharing is a critical meta-innovation that reduces duplication of effort and accelerates the accumulation of knowledge." — Source: [NobelPrize.org]
  6. On public funding for R&D: "Because innovation is a global public good, governments and philanthropic organizations must step in to fund research that the private sector will ignore." — Source: [IMF Podcasts]
  7. On institutional capacity: "A core challenge in development is building local institutional capacity that can sustain and adapt innovations after the initial funding ends." — Source: [Development Innovation Lab]
  8. On matching funds: "Government matching funds for philanthropic investments in R&D can align incentives and draw more resources toward neglected global challenges." — Source: [Center for Global Development]
  9. On innovation prizes: "Prizes and milestone payments offer an alternative to traditional grant funding, paying only for successful outcomes and transferring the risk of failure to the innovators." — Source: [American Economic Review]
  10. On the future of development: "The future of poverty alleviation lies in our ability to design markets and institutions that systematically generate and scale solutions for the world's most vulnerable people." — Source: [NobelPrize.org]