This article reports the results of fitting unobserved components (structural) time series models to data on real income per capita in eight regions of the United States. The aim is to establish stylised facts about cycles and convergence. A new model is developed in which convergence components are combined with a common trend and cycles. These convergence components are formulated as a second-order error correction mechanism which allows temporary divergence while imposing eventual convergence. This model is able to characterise the convergence patterns of all but the two richest US regions; these appear to have been diverging from the others in recent years. The use of unit root tests for testing convergence is critically assessed in the light of these results.
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Find related papers by JEL classification: C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models O40 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Barro, Robert J & Sala-i-Martin, Xavier, 1992.
"Convergence,"
Journal of Political Economy,
University of Chicago Press, vol. 100(2), pages 223-51, April.
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