Baumol's (1990) theory of productive and unproductive entrepreneurship is a significant recent contribution to the economics of entrepreneurship literature. He hypothesizes that entrepreneurial individuals channel their effort in different directions depending on the quality of prevailing...

In the economic development literature, cultural diversity (for example, ethnolinguistic fractionalization) has been shown to have a negative impact on economic outcomes in many underdeveloped countries. We hypothesize that the impact of diversity on economic performance depends on the quality...