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The prebisch-singer hypothesis: four centuries of evidence
journal contributionposted on 09.07.2014, 09:03 by David I. Harvey, Neil M. Kellard, Jakob B. Madsen, Mark Wohar
We employ a unique data set and new time-series techniques to reexamine the existence of trends in relative primary commodity prices. The data set comprises 25 commodities and provides a new historical perspective, spanning the seventeenth to the twenty-first centuries. New tests for the trend function, robust to the order of integration of the series, are applied to the data. Results show that eleven price series present a significant and downward trend over all or some fraction of the sample period. In the very long run, a secular, deteriorating trend is a relevant phenomenon for a significant proportion of primary commodities. © 2010 The President and Fellows of Harvard College and the Massachusetts Institute of Technology.
- Business and Economics