This paper investigates the relationship between the exchange rate pass-through (ERPT) and inflation by estimating a nonlinear time series model. Based on a simple theoretical model of ERPT determination, we show that the dynamics of ERPT can be well approximated by a class of smooth transition autoregressive (STAR) models using the past inflation rate as a transition variable. We employ several U-shaped transition functions in the estimation of the time-varying ERPT to US domestic prices. The estimation result suggests that declines in the ERPT during the 1980s and 1990s are associated with lowered inflation.
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