Trade, product cycles, and inequality within and between countries

This paper incorporates Northern product innovation and product-cycle-driven technology transfer into the continuum-of-goods Heckscher-Ohlin model. The creation of very skill-intensive goods induces the North to transfer production of older, less skill-intensive goods to the South. These relocated goods are the most skill intensive by Southern standards. Hence, product cycles raise the relative demand for skilled workers and thus wage inequality within both regions. This runs contrary to the Stolper-Samuelson theorem, but accords well with the fact that wage inequality has risen in both Northern and Southern countries. Moreover, product cycles increase income inequality between countries.