A threefold analysis of commodity prices is carried out to observe their long-run behaviour, their short-run properties and the main determinants. According to the evidence, the Prebisch-Singer hypothesis does not seem to be a property of most prices. The cycles of commodity prices are...

En relación con los síntomas que probablemente tendrá la actividad económica en el futuro, un aumento en el spread de tasas de interés reduce la probabilidad de tener momentos difíciles mas adelante. Este resultado se cumple para un período 12 y 24 meses adelante y se ajusta al modelo...

A threefold analysis of commodity prices is carried out to observe their long-runbehaviour, their short-run properties and the main determinants. According to theevidence, the Prebisch-Singer hypothesis does not seem to be a property of mostprices. The cycles of commodity prices are asymmetric...

This work analyzes the relationship between real interest rates and commodity prices. According to Frankel’s hypothesis (1986-2006): "low real interest rates lead to high real commodity prices". However, some empirical evidence suggests that commodity prices can predict monetary policy. In...

The long-run component of the Colombian unemployment rate is estimated for the last twenty years. According to the results, the main determinants of the permanent component of the unemployment rate are the real hourly wage, the non-wage labor costs and the rate of capital accumulation. Given the...

This paper deals with the size of the random walk property of Colombia's output in two periods 1925-1994 and 1950-1994. GDP and GDPPC were both found to be integrated of order one a result which is very well known. The sequences are highly persistent, specially in the period 1950-1994. The...

The study of the asymmetric behavior of macroeconomic variables over the business cycles phases has had a long tradition in economics. In this work we find evidence in favor of the hypothesis of having a Star-type nonlinear asymmetric behavoir of the economy activity, over the last two decades,...

A nonlinear smooth transition regression(STR) model of the demand for narrow money in Colombia is specified using monthly data for cash, prices, the scale variable (industrial GDP), the interest rate and the rate of depreciation, within the single equation framework allowed by the data. In...

In this paper we check the relationschip between the yields of the Colombian bonds traded in the (secondary) internal market and the yields of the sovereign global securities for the sample period 1999-2001. The hypothesis we maintain is that, under the assumption of capital mobility, it should...

Evidence of smooth transition autoregressive (STAR) representations is found in two, out of three, time series of different measures of annual inflation in Colombia during this decade for monthly data. The STAR-type nonlinearities are asymmetric for inflation computed as the variation of CPI...