Commodity price shocks are an important type of external shock and are often cited as a problem for economic growth in sub-Saharan Africa. This paper quantifies the impact of agricultural commodity price shocks using a near vector autoregressive model. Th

Commodity price shocks are an important type of external shock and are often cited as a problem for economic growth in Sub-Saharan Africa. This paper quantifies the impact of agricultural commodity price shocks using a near vector autoregressive model. The novel aspect of this model is that we...

The present paper investigates the cyclical nature of Consumer Sentiments Indices (CSIs) for the US and UK. Using Threshold Autoregressive (TAR) models the empirical analysis indicates that the US CSI is mean reverting but adjusts asymmetrically and downwardly rigid.

A novel procedure is applied to test for switches between hysteresis and the natural rate theory over more than a century of UK and USA unemployment data. For both the countries we see a period conforming to hysteresis starting in the early 1920s for the UK and 1930 for USA.

The rise of biofuels as a mainstream fuel source coupled with large price fluctuations in both crude oil and agricultural commodity markets in recent years has led to several investigations into the effect crude oil prices exert over agricultural commodity prices. This study analyses crude oil,...

This study considers the nonlinear relationship between the expected exchange rate change and the interest rate differential, using STR models (ESTR and LSTR), with Sharpe ratios, interest rate differentials and exchange rate volatilities as the transition variables. The results generally...

This paper conducts an examination of the price relationships of different qualities of coffee and how prices adjust over time in relation to each other. The main result shows that using threshold models, the coffee market may be considered to be highly integrated, contrary to the results...

This paper makes a threefold contribution to the underlying dynamic properties and causal effects of energy prices. Firstly, the paper makes a study of the underlying trends to help identify the time series path of nonrenewable energy resources, which can have far reaching consequences for...