- Professor Emeritus of Economics, University of London
- Reader, Professor of Economics, London School of Economics and Political Science University of London, 1950 - 1984
- Professor Emeritus of Economics, University of London, London School of Economics and Political Science University of London, 1960
Microeconomic theory; the foundations of welfare and public economics, social and collective choice, quotas and rationing, the theory of market and general equilibrium.
Theoretical econometrics and economic statistics; moment condition models, model selection and nonnested tests, specification tests, bias reduction and asymptotic approximations, survey nonresponse, survey-based estimation of expectations and national ac
Game theory and its application to the evolution of social norms, learning and innovation, theories of distributive justice, and the design of legislative systems.
Applied microeconometrics with an emphasis on structural modelling of individual behaviour; intra-household decision making; demand analysis; accounting for heterogeneity; survey design