Gerald W. Scullyis Professor of Economics in the School of Management at the University of Texas at Dallas, Richardson, USA. In 1996 he was Visiting Professor at the Inland Revenue Department, Wellington, New Zealand.Patrick James Caragatareceived his PhD in political economy from the University of Toronto in 1981. In June 1988 he moved to New Zealand and became chief economist at the Ministry of Energy where he redesigned the royalty regime for petroleum. His book Resource Pricing: Rent Recovery Options for New Zealand's Energy and Mineral Industries (1989) is now used as a standard reference tool for designing resource royalties in Asia and Latin America. In 1991 he became chief tax policy adviser with Inland Revenue in New Zealand. He redesigned the petroleum mining taxation regime in 1991, and worked extensively on international tax issues for several years. In 1994 he initiated the work to monitor the Health of the Tax System. As special adviser taxation economics he led the production of 37 working papers and the Report on the Health of the Tax System in September 1997. In October 1997 Dr. Caragata was appointed managing director of McCallum Petterson Financial Diagnostics Ltd. in Wellington. In 1998 he editedThe Economic and Compliance Consequences of Taxation: A Report onthe Health of the Tax System in New Zealand, also published by Kluwer Academic Publishers.