The Evolutionary Path of the Law

What lessons can legal scholars learn from the life and work of W. D. "Bill" Hamilton, a lifelong student of nature? From my small corner of the legal Academia, three aspects of Bill Hamilton’s work in evolutionary biology stand out in particular: (i) Hamilton’s simple and beautiful model of social behavior in terms of costs and benefits; (ii) his fruitful collaboration with the political theorist Robert Axelrod and their unexpected yet elegant solution of the Prisoner’s Dilemma, an important game or puzzle that had defied solution until Hamilton and Axelrod came along; and (iii) Hamilton’s conception of science generally -- and in particular his view of the process of scientific justification -- as a form of trial advocacy. In this review of Ullica Segerstråle’s recently-published biography of Bill Hamilton, the author briefly recounts and reviews each one of these important contributions

Raising Children to Work Hard: Altruism, Work Norms, and Social Insurance

Empirically, disincentive effects on work of generous welfare state arrangements tend to appear with a substantial time lag. One explanation is that norms concerning work and benefit dependency delay such effects. We model altruistic parents' economic incentives for instilling such work norms in their children. Anticipated economic support from parents may reduce work effort, and parental altruism makes threats to withdraw such support noncredible. Instilling norms mitigates this problem. However, generous social insurance arrangements tend to weaken parents' incentives to instill such norms in their children. We find empirical support for this prediction. Copyright by the President and Fellows of Harvard College and the Massachusetts Institute of Technology.