Abstract
This paper compares the output multipliers of the 1967 National input output model (367 industries) with the multipliers of the aggregated version (81 industries). The results show that, generally, the set of industries in the “full” model that were aggregated together for the “reduced” model, display a wide range of output multiplier values. Therefore, the output multiplier of an aggregated industry may not be truly representative of any of the industries that were joined together. Finally we show how information for a particular firm or disaggregated industry can be incorporated in an aggregated input-output model to obtain a close estimate of the actual output multiplier for that firm or industry.
Published Version
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