No-one denies that there are differences in average intelligence between different populations. The claim that there is variation in intelligence between populations is practically equivalent to the claim that there is variation between individuals in intelligence, since given individual variation, it must be the case that some groups of individuals will have higher means than others. This could only fail to be the case if nothing was correlated with intelligence.

The controversial (and incorrect) claims are (a) that there is a scientific notion of 'race' and (b) that genetic differences between these 'races' are responsible for certain observed differences between certain populations.

People run rigorous psychology experiments all the time; it's one of the more-sound experimental fields. The only real constraint is that because it deals with human subjects, there are limitations on what types of experiments can be conducted.

Sociology is harder to run experiments, because it deals with interactions among groups of people, rather than individuals. Nonetheless it benefits from natural experiments taking place all around us all the time. This opens it to a different set of confounds, because you cannot precisely design experiments to control them, but you can still do science. You cannot falsify arbitrary theories, but you can falsify many theories.

Ditto climate science; we can formulate numerical models, and refute them by comparing to the ongoing ground truth around us. We can use those numerical models to examine what would happen with perturbed environmental conditions. This a sound computational science for small perturbations. For larger perturbations or very long timescales, you will not have the necessary stability guarantees, but that doesn't mean that you can't do science.

Much of economics is secretly math. You have theorems and proofs rather than experiments. You're correct that this isn't science, but it's not trying to be, and that's OK. The remaining body of economics includes behavioral economics, which--much like psychology--is absolutely science, and can be done extremely rigorously, and macroeconomics, which is largely in the same boat as sociology; they have to take advantage of retrospective studies, but in a sufficiently diverse set of regional economies, you can do some science--you just can't always control for every confound via experimental design.

As someone who studied cognitive science in college, I can tell you that reproductibility is a big concern among researchers not only in cognitive psychology, but also in the social, clinical and developmental subfields. Reproductibility is also a concern for serious sociologists, and I'm sure it's the same thing in most of the other disciplines you've listed.

By contrast, most of evolutionary psychology is hardly testable since it tries to extrapolate what constitutes human essence at this point primarily from observable human behaviors, which is might be more a function of our current environment rather than genetics. It can also be used politically to justify anything, from neo-Nazism to anarcho-communism.

Your argument is that people do not teach Race in the same way anymore. I think that your implication is that the previous way of teaching Race was wrong -- however, this very article is making the point that political activism is changing the way that people teach, and politics has certainly affected how we teach Race -- the most politically-charged topic of them all!

So when you say "you are living in the past century", that could be a compliment -- it could say that the author is not being censored or brainwashed by a political orthodoxy.

If you actually want to improve his understanding of Race, I'd suggest providing him with some data that contradicts his statements, rather than just dismissing him as old-fashioned. Because on the other side of that, it implies that you could just be getting lost in a fashion.

General intelligence was a statistical artifact discovered from testing. It basically a theory that if you do well on a history test you'll probably do well on a math test.

> West Africans and East African are of the same race

They have similar skin color, but that doesn't mean they're particularly closely related.

Black Africans have the by far biggest genetic diversity of any population. This is because our species evolved there, and has had the longest to develop variations. By contrast, the rest of humanity comes from relatively small populations of Africa emigrants.

As it happens the best long distance runners come from an region in East Africa, while the best sprinters come from a region in West Africa. This includes US sprinters.

https://www.theatlantic.com/international/archive/2012/04/wh...

> West Africans and East African are of the same race, but differ in the case of marathon outcomes. Why can’t this be true for intellect?

It can be. Among Africans Igbo show much higher levels of educational attainment than others. I’m sure there are other groups this is true of.

> Discrimination is not some leftist fantasy. Black Americans have been systematically deprived of quality environments for over 400 years. I am talking about truly horrific intellectual deprivation from making it illegal to read during slavery to living in highly polluted sections of segregated cities today. When we talk about intellectual disparities history needs to be part of the conversation.

I agree. For example Irish IQ scores were historically lower than English and this is no longer true.

I don't believe the person you're replying to said that discrimination is a fantasy, but it's not always the answer either. It's important to study the situations so that we can identify when each is the culprit or how much of a factor they are.

Yes, if people have other better opportunities then they’re likely to pursue those. I highly doubt they dissipate entirely, if only because biomechanics don’t change. Being tall and skinny with long legs compared to most people will place those of East African ancestry at an advantage for long distance running regardless of culture. As the East African diaspora increases you’ll see more nationalities represented among successful long distance runners but I doubt there’ll be much dispersion in the ancestry of successful long distance runners. The West African diaspora are dominant in sprinting worldwide to a ridiculous extent. I think there are two men ever who don’t fit that profile among those who have run 100m in under ten seconds.

Not much though I’m sure there’s some cultural contribution. Cricket is really only played seriously in former British colonies whereas you can run a marathon with over a 1,000 competitors at least once a year in almost every city in OECD countries. For middle income countries the Mexico City Marathon was founded in 1983 and there appears to be at least 10 marathons annually in South Africa. I’ve run in the Shanghai Marathon and there must have been 10,000 competitors.

Long distance running is a good candidate for second least culture bound sport, after sprinting.

East African also overstates the relevant population group. Among East Africans the Kalenjin, an ethnolinguistic group are themselves dominant.

https://pdfs.semanticscholar.org/9b58/9a401e65cb8bbd1f3cacb6...

The dominance of Kenyans in distance running

Kenyan runners, and especially those originating from the Kalenjin tribe, have dominated international middle- and long-distance running for over 40 years, prompting significant interest in the factors contributing to their success. Proposed explanations have included environmental factors, psychological advantage and favourable physiological characteristics, which may be genetically conferred or environmentally determined. Running is inherent within local Kenyan tradition and culture, and the Kenyan way of life, which involves many outdoor activities and pastimes in addition to mostly unfavourable living conditions, is conducive to enhanced distance running performance. Despite economic deprivation, Kenya has produced world and international running cham- pions repeatedly over the past few decades; these champions have become role models for the younger gener- ations, who take up running in the hope of a better future for themselves. Favourable environmental conditions such as altitude, diet and anthropometry, in addition to the motivational and socio-economic factors mentioned above, have all been proposed as possible reasons for the unsurpassed achievements of Kenyan dis- tance runners. However, the fact that the majority of internationally successful runners originate from a small tribe that accounts for approximately 3% of the total Kenyan population also points to a possible genetic component. Whether this is subject to influence from other co-factors, such as altitude or training effects acquired during childhood, remains as yet unresolved.