Using a standard definition of productivity growth, it is shown that a country may have higher productivity growth than another country in each sector, but may have a lower productivity growth rate overall. Also, it is shown that popular methods for aggregating firm/industry estimates of productivity growth have a serious problem in that productivity of all firms/industries can go up, but aggre...

In Ethiopia, the use of traditional and improved grain sorghum [Sorghum bicolor (L.) Moench] variety as green forage crop is limited mainly by large stalk thickness low nutritive values. An experiment was conducted to explore if biomass accumulation values could be managed seeding rates. Two dual-purpose varieties (Melkam Chelenko), one local (Masugi) each representing early late maturity group...

I examine worker effort as a potential margin of adjustment to minimum wage hike using unique data on piece rate workers who perform homogenous task and whose individual output is rigorously recorded. By employing difference-in-differences strategy that exploits the increase in Florida’s from $6.79 $7.21 January 1, 2009, location pre-2009 productivity distribution, provide evidence consistent w...