The volatility of growth in U.S. real GDP declined dramatically in the mid-1980s. Viewed through the lens of linear autoregressive models, this phenomenon appears to be the result of a structural break in the innovation process that drives GDP fluctuations. We present an alternative model that...

"This paper develops a new approach to change-point modeling that allows for an unknown number of change points in the observed sample. Our model assumes that regime durations have a Poisson distribution. The model approximately nests the two most common approaches: the time-varying parameter...

This study examines the integration properties of total renewable energy production, as well as production of biofuels and biomass in the United States. To do so we employ Lagrange Multiplier (LM) univariate unit root tests with up to two structural breaks. We conclude that each production...