All Title Author
Keywords Abstract

Investigando a hipótese da paridade do poder de compra: um enfoque n?o linear

DOI: 10.1590/S1415-98482011000200004

Keywords: law of one price, real exchange rate, setar model, nonlinearity.

Full-Text   Cite this paper   Add to My Lib


we consider a threshold time series model in order to test the ppp hypothesis with brazilian effective real exchange rate dataset in the long run. by following keenan (1985), tsay (1986) and chan (1990), we test brazilian dataset for several types of nonlinearities. so, after apply hansen's test to infer about the number of regimes, we apply the more recent methodology of self-exciting threshold autoregressive (setar) model to point out some threshold to which a signal of turning point could be given in the states of the exchange rate dynamics. all the tests suggest that the brazilian real exchange rate is highly nonlinear. the skeleton of the setar models fitted shows that ppp hypothesis is supported in the long run in spite the deviations from short run.


comments powered by Disqus