We propose a new long-memory model with a time-varying fractional integration parameter, evolving non-linearly according to a Logistic Smooth Transition Autoregressive (LSTAR) specification. To estimate the time-varying fractional integration parameter, we implement a method based on the wavelet...

This paper explores the mean-reverting behavior of the unemployment rate using monthly geographically disaggregated data for the period 1991:01 through 2012:02. We apply both standard unit-root tests and tests that allow for one and two structural breaks in the mean. We find evidence that favors...

This paper explores the mean-reverting behavior of the unemployment rate using monthly geographically disaggregated data for the period 1991:01 through 2012:02. We apply both standard unit-root tests and tests that allow for one and two structural breaks in the mean. We find evidence that favors...

This study examines the predictive power of a partisan conflict index on income inequality. Our study adds to the existing literature by using the newly introduced nonparametric causality-in-quantile testing approach to examine how political polarization in the Unites States affects several...

This paper estimates the complete historical US price data by employing a relatively new statistical methodology based on long memory. We consider, in addition to the standard case, the possibility of nonlinearities in the form of nonlinear deterministic trends as well as the possibility that...

This paper contributes to the sparse literature on inequality convergence by empirically testing convergence across the U.S. States. This sample period encompasses a series of different periods that are discussed in the existing literature -- the Great Depression (1929-1944), the Great...

This paper explores the mean-reverting behavior of the unemployment rate using monthly geographically disaggregated data for the period 1991:01 through 2012:02. We apply both standard unit-root tests and tests that allow for one and two structural breaks in the mean. We find evidence that favors...

We employ the nonlinear unit-root test recently developed by Omay et al. (2018), as well as other linear and nonlinear tests, to examine the stationarity of five multi-century historical U.K. series of real output compiled by the Bank of England (Thomas and Dimsdale, 2017). Three series span...

This paper reports a two-stage analysis of inflation persistence using monthly data from 11 IT countries and, for comparison, the US, a non IT country with a history of credible monetary policy. First, we estimate inflation persistence in a rolling-window fractional integration setting using the...

This paper proposes an empirical framework to estimate Okun's law which focuses on structural breaks and threshold nonlinearity. We use sequentially the Bai and Perron's (1998, 2003) structural break and threshold methodology to enable regime-dependent as well as threshold-dependent changes in...