Otherwise, the cognitive impact of immigration – at least as proxied by the differences in performance on the PISA tests between the national average, which includes immigrant children, versus only native children – is almost entirely negative for its supposed beneficiaries across the entire world.
Even those few countries with expressly “cognitively elitist” immigration policies see only the most modest of benefits: Singapore: +0.7; Canada: -0.1; Australia: -0.2.
Otherwise, the only countries not to be significantly affected are those which see little immigration in general, such as Japan and Korea. So perhaps the best way of “winning” the game to attract quality immigrants is to avoid playing it in the first place.
Western Europe is a complete disaster zone, getting a harder cognitive hit even though the immigrant share of their population is considerably smaller than the US, where they constitute almost a quarter of the PISA-taking population. The German national average takes an astounding 2.4 IQ point hit due to immigrants. Moreover, there is no full convergence between first and second generation immigrants. Although one can hope the children of all those Syrian “doctors and engineers” will go on to become productive and loyal citizens, past experience suggests that they will merely bolster the sullen ranks of a permanent, growing, ethnically distinct, and highly criminalized underclass.
The situation in the US is actually considerably better than in Europe – the low-IQ Central Americans, who are not sending their best, are counterbalanced by the millions of talented East Asians, Indians, and other intelligent and highly motivated people who still want to make America their home. Thanks to that the world’s biggest immigrant nation only loses 1.3 IQ points due to all the newcomers. Donald Trump is promising a big beautiful wall to stem the rising tide of color from the south, but even if he fails to come through, at least the mestizos have better tempers and aren’t wont to blow up like the Mohammedans. The choice between Eurabian dhimmitude or fusing with La Raza Cosmica isn’t exactly hard.
Russia only loses 0.4 IQ points due to immigration, which sounds surprising low, given that Central Asia appears to be a cognitive black hole – Kyrgyzstan, by far not the worst state in the region, came dead last in PISA 2012, and Lynn and Grigoriev have estimated the IQs of Kazakhs and Uzbeks in Kazakhstan to lie in the 80s (very comparable to the chasm between European America and Central America).
First, for all the nationalist rhetoric, in comparative terms the demographic inflow into Russia from the “Global South” is still rather modest; (official) annual immigration runs at about 300,000 souls per year, and a big part of that now accrues to Ukraine (in contrast, about 500,000 people immigrate to the UK every year, despite its population being more than twice lower than Russia’s). This is backed up by the PISA 2015 statistics, according to which only 7% of the Russian schoolchildren who sat the test have an immigrant background, versus 17% in both the UK and Germany, and 23% in the US.
Second, I assume that the children of the ethnic Russians who repatriated to Russia in the 1990s – in absolute numbers, they would still easily outnumber the Central Asians and Caucasians who came in the 2000s – are also counted as immigrants, and thus “dilute” the negative influence of the Uzbeks and Tajiks. Finally, it is also quite likely that the Central Asian “immigrant” Russians are brighter than the average Russian who never left: First, it was typically (genuine) doctors, engineers, and other specialists who were sent to develop Central Asia under the Soviet Union, and second, getting out of the place after the Soviet collapse was kind of an IQ test of its own. Both of these points may have served to artificially raise the quality of statistically-defined immigrants to Russia and to thus dilute the size of its hit on Russian national IQ.
The UK doesn’t do too badly – only a 0.9 IQ point hit – because the Anjem Choudarys are partially canceled out by talented and ambitious Europeans. Many of the finance and technological firms in the City of London are majority staffed by talented foreigners. There are 200,000 French citizens in London.
Given the strong dependence between national IQ and economic prosperity, the globalist open borders project presents a serious challenge to the long-term viability of the First World cognitive engines that drive the vast bulk of technological progress – progress that is already threatened by the dysgenic trends embedded in post-Malthusian society and the banal fact that problems tend to get harder, not easier, as you ascend the technological ladder. This is not to even mention the risk of “institutional contagion” from newcomers who are culturally and perhaps biologically incompatible with that unique blend of individualism and commitment to the commonweal that facilitated the rise of European civilization.
PS. A list of native IQs converted from PISA according to calculations by commenter “m”: