Law Commons^™

Harsanyi 2.0, Matthew D. Adler

All Faculty Scholarship

How should we make interpersonal comparisons of well-being levels and differences? One branch of welfare economics eschews such comparisons, which are seen as impossible or unknowable; normative evaluation is based upon criteria such as Pareto or Kaldor-Hicks efficiency that require no interpersonal comparability. A different branch of welfare economics, for example optimal tax theory, uses “social welfare functions” (SWFs) to compare social states and governmental policies. Interpersonally comparable utility numbers provide the input for SWFs. But this scholarly tradition has never adequately explained the basis for these numbers.

John Harsanyi, in his work on so-called “extended preferences,” advanced a fruitful …

Future Generations: A Prioritarian View, Matthew D. Adler

All Faculty Scholarship

Should we remain neutral between our interests and those of future generations? Or are we ethically permitted or even required to depart from neutrality and engage in some measure of intergenerational discounting? This Article addresses the problem of intergenerational discounting by drawing on two different intellectual traditions: the social welfare function (“SWF”) tradition in welfare economics, and scholarship on “prioritarianism” in moral philosophy. Unlike utilitarians, prioritarians are sensitive to the distribution of well-being. They give greater weight to well-being changes affecting worse-off individuals. Prioritarianism can be captured, formally, through an SWF which sums a concave transformation of individual utility, rather …

Well-Being, Inequality And Time: The Time-Slice Problem And Its Policy Implications, Matthew D. Adler

All Faculty Scholarship

Should equality be viewed from a lifetime or “sublifetime” perspective? In measuring the inequality of income, for example, should we measure the inequality of lifetime income or of annual income? In characterizing a tax as “progressive” or “regressive,” should we look to whether the annual tax burden increases with annual income, or instead to whether the lifetime tax burden increases with lifetime income? Should the overriding aim of anti-poverty programs be to reduce chronic poverty: being badly off for many years, because of low human capital or other long-run factors? Or is the moral claim of the impoverished person a …