A brief overview of the historical background, nature, and rapid growth in volume and scope of new political economy since the early 1980s is provided. the paper continues with some general reflections on the strengths and weaknesses of the new political economy approach, illustrated by the other contributions to this special issue of the Journal of Economic Surveys. The final Section summarises these contributions.

In the extensive literature on the rules versus discretion debate three related, but logically distinct, areas of debate are frequently confused: the active versus passive policy debate, the rules versus discretion debate proper, and the open-loop (i.e. fixed) rule versus closed-loop (i.e. contingent) rule debate. Section 2 of this paper examines the nature of and interrelations between these three areas of debate. In section 3 the contributions of economic analysis to the debate are explored in an apolitical framework, in particular, the arguments for rules proposed by Friedman and Kydland and Prescott are assessed. Section 4 extends this framework to take into account the political dimension and the rules versus discretion debate is viewed as a cost-benefit problem involving both political and economic factors. A general conclusion is that since the rules versus discretion debate is an exercise in political economy, the debate cannot be properly assessed in the sterile apolitical framework of pure economic analysis.

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1 989) Lectures on Macroeconomics. Cambridge, Mass. and London: MIT Press f24.75. ISBN 0-262-02283-4. xiii + 650 pp. Keith Cuthbertson and Mark P. Taylor (1987) Macroeconomic Systems. Oxford and New York: Basil Blackwell €10.95 (pbk). ISBN 0-631-14342-4.ix + 278 pp.

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