Olav Sorenson
Diversity has been thought to influence innovation and economic growth in many ways. The mechanisms proposed as underlying these relationships interestingly operate at different spatial scales. Differing estimates across levels of spatial resolution therefore provide empirical insight into the processes underlying regional differences in innovation, entrepreneurship, and economic growth. After discussing these mechanisms and why they operate at different spatial scales, this essay revisits a number of the existing studies of diversity through this lens. Diversity appears to have had the largest effects at fine-grained scales, suggesting that its economic value to regions emerges most strongly from facilitating innovation and information exchange through serendipitous interactions.