A new study published in Research in Social Stratification and Mobility suggests that the transmission of cognitive ability from parents to children is primarily driven by genetics, with little influence from shared environmental factors like family resources. The findings challenge traditional assumptions in social mobility research that often attribute these correlations primarily to socio-economic status..

..The German TwinLife survey is a large, longitudinal study designed to explore the interplay between genetic and environmental factors in shaping various life outcomes, including cognitive abilities, educational attainment, and social mobility. The survey focuses on same-sex twin pairs and their biological families, enabling researchers to separate the effects of genetic inheritance from those of shared family environments. For example, monozygotic twins, who share 100% of their genetic material, can be compared with dizygotic twins, who share about 50% of their genetic material, to estimate the relative contributions of genetic and environmental factors.

By incorporating multiple family members—including parents and siblings—across four birth cohorts, the survey spans an extensive developmental range, from early childhood (ages 5–6) to young adulthood (ages 21–25). This breadth allows researchers to examine how genetic and environmental influences evolve over the life course.

…The results provided evidence that the intergenerational transmission of cognitive ability is driven primarily by genetic inheritance rather than shared environmental factors. Across all age groups examined, the researchers found minimal evidence that parental cognitive ability significantly influenced children’s cognitive development through environmental mechanisms. Instead, the observed similarities in cognitive abilities between parents and children were largely attributed to shared genetic factors.

…“The key takeaway is that the similarity in cognitive ability between parents and children appears to be driven primarily by shared genes rather than shared environment. While we often assume that parents influence their children’s cognitive development through factors like education style, resources, and parenting, our study finds little evidence for environmental transmission that occurs through parental cognitive ability specifically.”

link

Full study: Disentangling genetic and social pathways of the intergenerational transmission of cognitive ability – A nuclear twin family study

So much for white privilege. White people have amply demonstrated that they have the right kinds of genes to produce massive complex civilizations that function well. Obviously, the obverse is just as true — peoples who do not form well-functioning complex civilizations probably lack the genetics to do so. I do think white and Chinese, Japanese, Koreans and some others have a moral obligation to help less endowed parts of the world. But I do not think we are in any way required to admit millions of people who, no matter the DEI given them, will never be able to perform in ways that assist or improve complex societies made up of people not of their genetic endowment. I myself can speak Chinese and like many aspects of Chinese culture and am able to succeed in China, but prefer living in USA. The genetic endowment is different. China is a shame culture based on hierarchies. The West is a guilt culture based on limited but substantial personal freedoms. ABN

UPDATE: Another point is within white societies, many whites, including highly intelligent ones, are perfectly content doing menial and blue collar jobs without complaint. White people at all levels are pretty good are cooperating with each other and honest enough that most laws are largely followed and most jobs are done conscientiously. When POCs and Jews screech and complain, most whites have no defenses, or inadequate ones to perceive the situation clearly, because when whites scream and complain most whites will believe there must be a good reason for it. Jews have used this trick against whites for the entire modern era in the West and backed it up with clandestine violence when screaming alone is not sufficiently effective. To this day, the vast majority of whites are incapable of grasping how that technique works on them and how it is being used against them. The most distressing side of this situation is the majority of whites who hold positions of power today are whites who passed the obedience mind-control tests and have not been poisoned or disabled by clandestine operatives, often posing as friends. ABN