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Non-Linear Dynamics in Deviations from the Law of One Price: A Broad-Based Empirical Study

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  • Chowdhury, Ibrahim
  • Sarno, Lucio
  • Taylor, Mark P

Abstract

In this Paper we test empirically the validity of the law of one price using data for five major bilateral US dollar exchange rates and nine goods sectors during the recent floating exchange rate regime since the early 1970s. Using threshold autoregressive models, we find strong evidence of non-linear mean reversion in deviations from the law of one price with plausible convergence speeds. Consistent with theoretical arguments on international goods markets arbitrage under transactions costs and with an emerging strand of empirical literature, these results contribute towards forming a consensus view in favour of discrete regime switching in deviations from the law of one price and the presence of differing non-zero transactions costs across a broad range of goods and countries.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 3377.

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Date of creation: May 2002
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Handle: RePEc:cpr:ceprdp:3377

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Keywords: law of one price; mean reversion; purchasing power parity; real exchange rate; threshold non-linearity;

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