The International Comparison Program (ICP) compares levels of economic activity and relative price levels among countries of the world. The main feature of the ICP is that it produces spatial indexes or purchasing power parities (PPPs) that allow cross-country comparison of gross domestic...

The inequality growth during the last quarter century is explained as caused by a decreasing labor-labor exchange rate, i.e. devaluation of one's labor in exchange for other's labor embodied in the commodities affordable for one's earnings. We show that the productivity growth allows employers...