The Prebisch-Singer (PS) hypothesis, which postulates the presence of a downward secular trend in the price of primary commodities relative to manufacturers, remains at the core of a continuing debate among international trade economists. The reason is that the results of testing the PS...

Recent energy and food price surges, in the wake of Russia's invasion of Ukraine, have exacerbated inflation pressuresthat are unusually high by the standards of the past two decades. High and rising inflation has prompted many emerging market and developing economy (EMDE) central banks and some...