The Bell Curve: Intelligence and Class Structure in American Life, an empirical study arguing for IQ correlations with success, genes and race apparently sparked a big controversy in the US since 1992 when it was first published.
The central thesis of writers Richard J. Hernstein and Charles Murray is that intelligence is partly a genetically inherited property and that there are meaingful differences in average IQ between East Asians, White Americans, and African Americans due to their different ethnicities.
I read there have been a lot of critical literature in response to this. But has there been any conclusive statement on this question 26 years after the publication of this work? As a non-specialist I find reading through the massive literature around the work to be daunting.