Morality and diversity

His recent articles include "Voluntary Donations and Public Expenditures in a Federalist System," "The Revealed Objective Functions of Nonprofit Firms," "Economic Perspectives on Regulation of Charitable Solicitation," and "Profits as Incentives within Nonprofit firms." He is currently working on a book entitled Regulating the Nonprofit Sectorand has begun research on perceptual models of choice that integrate psychology and economics.