How convergent are rice export prices in the international market?

This study revisits the issue of long-term price convergence of rice export prices for India, Pakistan, Thailand, Uruguay, the United States, and Vietnam using a two-stage pairwise unit root testing approach. To deduce evidence or lack of proof of convergence in price series, we also examine convergence using sigma and beta convergence specified in both unconditional and conditional frameworks. The methodology used is driven by the need to address three key concerns: (i) the likelihood of finding stationary price differentials, (ii) the magnitude of these differentials, and (iii) their speed of adjustment. To evaluate these concerns, we use monthly data for 18 price series drawn from these six countries from September 2011 to February 2021. The evidence points to a lack of international convergence. This gives rise to the possibility that a shield from a general downward export price trend is already in place for some exporters. Furthermore, we find that the likelihood of convergence is greater between pairs of price series that are characterized as high quality or having the same country of origin or having similar market share. Evidence also suggests that a converged pairing is more likely to have a smaller price differential if both price series are for low-quality rice.     

Inflation and globalisation: The Tawney Lecture 2022

The paper examines the causal relationships and interdependence between inflation and globalisation over centuries: in the sixteenth century, in the age of Spanish silver; then in the first age of modern globalisation from in the middle of the nineteenth century; and finally in the new globalisation that took off in the 1970s. In the latter cases, inflation was a response to a negative supply shock, and eventually generated policy decisions on economic opening. Both recent globalisations may be explained as technologically driven, and some of the most important productivity gains involved the cost of transport, but the fundamental innovations substantially pre-dated the moment at which they were economically transformative. Scarcity dramatically changes relative prices, but not the overall price level. Initially inflation became a policy solution, an attractive way of meeting the challenges of scarcity, but then its increasing costs became apparent, and more, rather than less, global integration looked like a way of reducing costs and minimising social pressure. Policy choices were involved in generating the globalised world: not only the removal of impediments to commerce, but also a consensus around a stable and internationally applicable monetary framework, whether the gold standard in the late nineteenth century or a modern inflation targeting regime in the late twentieth century.