In this lecture I first give an explanation for invidious preferences based on the (evolutionary) competition for resources. Then I show that these preferences have wide ranging and empirically relevant effects on labor markets, such as: workplace skill segregation, gradual promotions, wage...

The paper builds an argument that international trade can be an explanation behind polarization of employment in the labor market observed in developed countries such as UK and US It considers a small open economy, having production sectors which use three types of labor: high-skill,...