Material Incentives and Voluntary Blood Donor Supply
This paper examines the paradoxical effect of material incentives on the supply of voluntary blood donors, drawing on the economic concept of intrinsic motivation and findings from case studies conducted in the United States, Sweden, and the United Kingdom. Despite the standard economic law of supply predicting that incentives should increase participation, empirical evidence suggests that cash and non-cash rewards reduce the number of returning voluntary donors by 7 to 9 percent. The paper responds to a structured set of case study questions, proposes a research project outline, and reflects on the pedagogical value of using blood donation as an accessible real-world illustration of prosocial economic behavior.
- Introduction: The Law of Supply and Prosocial Behavior: Law of supply applied to voluntary blood donation
- Case Study Questions and Findings: US incentive types and their general effects on donors
- International Evidence on Incentives and Donor Behavior: Swedish and UK studies on monetary incentives
- Intrinsic Motivation and the Crowding-Out Effect: Psychological reasons incentives reduce donor supply
- Policy Alternatives for Increasing Blood Bank Supply: Selective and public incentive strategies for policymakers
- Project Outline and Reflection: Research outline and case study pedagogy reflection
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What makes this paper effective
- Uses a relatable real-world example — blood donation — to illustrate an abstract economic paradox, making complex behavioral theory accessible to a broad audience.
- Integrates empirical evidence from multiple countries (US, Sweden, UK), strengthening the argument by showing cross-cultural consistency and variation.
- Balances theoretical explanation (intrinsic motivation, prosocial behavior) with practical policy recommendations, demonstrating applied economic reasoning.
Key academic technique demonstrated
The paper demonstrates the case-study response format effectively — each numbered question receives a focused, evidence-backed answer that builds cumulatively toward a coherent argument. This technique is useful in economics and social science courses as it requires students to synthesize readings, apply theoretical frameworks, and derive policy implications from a single unified scenario.
Structure breakdown
The paper opens with theoretical grounding (law of supply), then works through six structured case study questions covering incentive types, general effects, international comparisons, psychological explanations, population-level variation, and policy options. It closes with a proposed research project outline and a brief reflective section on the pedagogical function of case studies. This layered structure moves logically from description to explanation to application.
Introduction: The Law of Supply and Prosocial Behavior
The law of supply in economics states that, all else unchanged, an increase in the price of a good or service will increase the quantity supplied. The quantity supplied is the level of supply that producers are willing to bring to the market for sale. Suppliers are assumed to be rational, meaning they seek to maximize utility for themselves. As such, they will supply more of something if they expect to receive a higher price for it. However, does the law of supply apply to prosocial activities such as blood donation?
The World Health Organization in 1975 passed a resolution encouraging countries to target 100 percent voluntary non-remunerated blood donations by 2020. This meant filling blood banks with donations collected from unremunerated volunteers. However, developed nations such as the United States have begun offering material incentives to blood donors to encourage more people to donate blood to national blood banks. The incentives offered include gift cards, cash, community service credits for minor offenders, ticket vouchers, blood assurance program memberships, and paid time off work (Abolghasemi et al. 10).
Based on the law of supply, one would expect the supply of donors to increase with the introduction of material incentives. However, findings from conducted studies show that cash incentives discourage seven percent of donors from donating again, while other incentives discourage nine percent of donors from returning (Abolghasemi et al. 10). Studies conducted to compare findings from different locations found that the introduction of monetary incentives reduced the supply of donors at religious sites by almost half and increased donor supply in schools and universities, although the increase was minimal (Abolghasemi et al. 10).
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