Science and civilization owe much to Richard Lynn for his decade-long attempts to identify major factors behind the rise and fall of modern populations. In “Race differences in intelligence: An evolutionary analysis” (2006) Lynn mapped geographic variations in intelligence, and explained related race differences by Cold Winters theory, according to which people from Africa migrated up North, and met still more harsh climatic challenges, so they had to develop new ways of preserving food, heat-efficient cloth and sheltering, complex traps, and later agricultural, industrial and urban ways of life. As they migrated further North, they became increasingly exposed to unforgiving Darwinian Selection for superior intelligence, health, and character.
Support for Cold Winters theory comes by showing that mean temperature in some geographic regions correlates with mean IQ. For example, it is now well-established that strong correlations exist between IQ and temperature at the national level. In terms of survival probability, warmer climates seem to tolerate significantly lower human IQ, relative to colder, harsher climates:
Richard Lynn (1930 – ) is a British Professor Emeritus of Psychology at the University of Ulster and assistant editor of the controversial journal “Mankind Quarterly” who is known for his views on racial, ethnic and national differences in intelligence.
Wikipedia: Richard Lynn
Cold Winters Theory (CWT; Lynn, 1991) offers a viable explanation for race differences in intelligence. It proposes that IQ gaps exist because of different evolutionary pressures faced by the ancestral humans who left Africa, compared with those who remained. Support for CWT comes by showing correlations between national temperature and IQ.
Helmuth Sørensen Nyborg (1937 – ) is a former professor of developmental psychology at Aarhus University, Denmark and Olympic canoeist. His main research topic is the connection between hormones and intelligence. Nyborg is a controversial figure among the Danish public for his research on topics such as the inheritance of intelligence and the relationship between sex and intelligence. In his research Nyborg has argued that white people tend to be more intelligent than blacks, that immigration from non-Western countries leads to a decline in the average intelligence of the receiving Western country, and that atheists tend to be more intelligent than religious people.
In 2000 he wrote the article “The decay of Western civilization: Double relaxed Darwinian Selection”. It estimated the effect that native Europeans have few children and immigrants with lower IQ have far more, and concluded that Europeans will soon be in minority in Europe and that the average IQ will drop so much that prosperity, democracy and civilization is threatened.
Wikipedia: Helmuth Nyborg