This paper offers a critical comparison between the North American levels school of applied general equilibrium modelling and the Norwegian/Australian school of linearizers. The paper develops both the levels and linearized representations of a neoclassical, multiregion trade model. This development is used to focus attention on similarities and differences between the two schools. The main conclusions are as follows. i) The method used to solve applied general equilibrium models is not really the issue - the solution method used has become short-hand for a host of cultural differences reflecting the orientation of the two groups. ii) Levels or linearized versions of models are equally valid representations. Either representation is a natural starting point for obtaining accurate solutions of the model. iii) Linearized versions ofter aid transparency in explaining the mechanisms at work in a model. iv) In view of recent developments with the GEMPACK software suite, it is no longer necessary for linearizers to settle for solutions containing linearization errors. v) The two schools have a great deal in common and both would benefit from greater cooperation.
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Find related papers by JEL classification: D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models F11 - International Economics - - Trade - - - Neoclassical Models of Trade F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics O49 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Other
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