Blood for Money: An Institutional and Empirical Analysis of Blood Donation Systems

contradictory insights. We deconstruct three dominant paradigms: the neoclassical approach, which diagnoses shortages as a simple pricing problem and prescribes market incentives as the remedy; the behavioral perspective that introduces the "crowding-out" hypothesis, arguing that such extrinsic incentives can undermine the intrinsic motivations behind donations; and the institutional framework, which explains the absence of organ markets, including blood, through prohibitively high transaction costs and the social norm of "repugnance" against the commodification of the human body. Finally, this chapter proposes an integrated analytical framework advancing that the institutional context, particularly the strength of informal rules like social norms, is the main determinant of the effect of an incentive. Chapter 2 empirically tests and compares the performance implications of these different institutional settings by conducting a global cross-country analysis and applying a novel methodological approach -a Oaxaca-Blinder decomposition analysis extended with Recentered Influence Function (RIF) regressions. It focuses on the effectiveness of purely voluntary donation systems against "mixed systems" that incorporate market-like mechanisms such as paid or family replacement donations. The analysis reveals that while differences in observable country-level characteristics explain part of the performance gap, there remains a large and statistically significant "unexplained" component that render voluntary systems to outperform the mixed systems among most of the distribution. This unexplained structural advantage is interpreted as an evidence of a motivational "crowding-out" effect, suggesting that the introduction of market-like mechanisms often backfires. Chapter 3 further explores the importance of the institutional context in shaping blood donations by investigating the heterogeneous effects of specific incentives within the European Union. While the EU formally operates under a guideline of voluntary, non-remunerated donation, member states employ a wide variety of incentives. We hypothesize that the conflicting empirical results found in the literature are a direct consequence of unobserved heterogeneity in national social norms. Using a Finite Mixture Model (FMM), the analysis statistically identifies two distinct latent classes of countries that exhibit opposing behavioral responses to identical incentives. One class, driven by a "repugnance" norm, reacts negatively to direct monetary incentives but positively to non-monetary rewards and paid time off. The other class, guided by a "reciprocity" norm, responds positively to both monetary and non-monetary rewards but negatively to paid time off. These findings confirm that incentive effectiveness is not uniform among countries but depend on the prevailing social norms of the society they are used in. This chapter offers an institutional foundation for the crowding-out theory and highlights the need for policy tailored to these specific contexts rather than centralized policies. Keywords:Blood Donation, Crowding Out, Institutional Economics, Incentives, Oaxaca- Blinder Decomposition, Finite Mixture Model, Health Policy