Before that he was a partner in Business and Economic Research Ltd. He has a PhD in general equilibrium modelling and 25 years of experience in economic consulting, specialising in economic modelling, econometrics and public policy research in areas such as education, taxation, savings and retirement, energy and environment, trade and transport. His econometric work has included forecasting and estimating empirical relationships in the areas of corporate credit risk and organisational structure. He has developed microsimulation models of savings and the tertiary student loan scheme. Adolf has been a member of the Advisory Committee on Economic Statistics since 1996 and he was an Expert Reviewer for the IPCC Working Group II Fourth Assessment Report released in 2007.