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Unit Root in the Wage-Price Spiral Is Not Hysteresis in Unemployment

  • Bruno Amable
  • Jérôme Henry
  • Frédéric Lordon
  • Richard Topol

Hysteresis is one of the main concepts used in Layard, Nickell and Jackman's book, Unemployment: Macroeconomic Performance and the Labour Market. Attempts to clarify the concept of hysteresis, from its formal representation to its empirical applications. Emphasizes the idea that hysteresis refers back to a given set of formal properties, independently of the phenomenologies within which it is liable to be encountered. In economics, the fields concerned may indeed vary a lot (labour market, foreign trade, etc.). By highlighting all the formal properties of hysteresis, shows how the assimilation of phenomena characterized by a zero eigenvalue for linear systems (or unit-root systems for discrete-time processes) is wrong and, moreover, how the imprecise use of the concepts can lead to the particular constraints affecting unit-root econometrics being overlooked.

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Article provided by Emerald Group Publishing in its journal Journal of Economic Studies.

Volume (Year): 20 (1993)
Issue (Month): 1/2 (January)
Pages: 123-135

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Handle: RePEc:eme:jespps:v:20:y:1993:i:1/2:p:123-135
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