You may not consider yourself to be racist. But, your assertion in the form of an explanation is. This is not based soley on my casual observations but also on the work of Dr. Kevin Mitchell, Associate Professor of Genetics and Neuroscience at Trinity College Dublin, whose research is aimed at understanding the genetic program specifying the wiring of the brain and its relevance to variation in human faculties, especially to psychiatric and neurological disease and to perceptual conditions. I have summarized a recent article of his here:
Review
Why genetic IQ differences between 'races' are unlikely
The idea that intelligence can differ between populations has made headlines again, but the rules of evolution make it implausible
The idea that there may be genetic differences in intelligence between one population and another has resurfaced recently, notably in the form of a New York Times op-ed by the Harvard geneticist David Reich. In the article, Reich emphasises the arbitrary nature of traditional racial groupings, but still argues that long periods of ancestry on separate continents have left their genetic marks on modern populations. These are most evident for physical traits like skin and hair colour, where genetic causation is entirely uncontroversial. However, Reich asserts that all genetic traits, including those that affect behaviour and cognition, are expected to differ between races.
To end up with systematic genetic differences in intelligence between large, ancient populations, the selective forces driving those differences would need to have been enormous. What’s more, those forces would have to have acted across entire continents, with wildly different environments, and have been persistent over tens of thousands of years of tremendous cultural change. Such a scenario is not just speculative – I would argue it is inherently and deeply implausible.
The bottom line is this. While genetic variation may help to explain why one person is more intelligent than another, there are unlikely to be stable and systematic genetic differences that make one population more intelligent than the next.--I hope you find this to be helpful.