I can see the costs easy enough but what are the benefits?

Here’s something you don’t see mentioned very often: The Costs of Ethnic Diversity. A surprisingly long and detailed article and even comes with a podcast.

Williams and O’Reilly (1996) review dozens of studies showing that ethnic diversity has a negative impact on group performance. In the two decades since, more research has reinforced that result. Alesina and La Ferrara (2005) find that increasing ethnic diversity from 0 (only one ethnic group) to 1 (each individual is a different ethnicity) would reduce a country’s annual growth by 2 percent. Multiple studies (La Porta et al., 1999Alesina et al., 2003Habyarimana et al., 2007) have shown that ethnic diversity negatively affects public good provision. Stazyk et al. (2012) find that ethnic diversity reduces job satisfaction among government workers. Parrotta et al. (2014a) find that ethnic diversity is significantly and negatively correlated with firm productivity.

Lots of evidence that another among the common core views of the left is wrong which is possibly the least surprising result of all.

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