"Dysgenics refers to a genetic deterioration of a population or populations and the study of such processes.
It may occur both through internal factors (such as the more intelligent in a population having lower fertility) and/or external factors (such as race mixing with another population with lower intelligence).
Dysgenic processes has been argued to be an important cause of the decline and fall of many advanced historical civilizations such as that of ancient Greece and ancient Rome.
Dysgenic effects in modern societies
During the mid-nineteenth century several scientists, including Charles Darwin, began to worry about and find empirical evidence for that the genetic quality of Western nations was deteriorating. The earliernatural selection had been changed by processes such as improved public health and reduced infant and childhood mortality meaning that more of the less achieving members of society reproduced successfully.
After World War II research and public discussion on dysgenics and eugenics increasingly become rejected and taboo subjects. Another trend after WWII is the mass immigration to Western countries of people from races with different genetics and often an argued lower average genetic intelligence.
It has also been argued that mass killings and class warfare, such as during the French Revolution and during Communist rule, had a dysgenic effect through the killing of the more intelligent by the less intelligent. Another argument is that modern warfare may have had a dysgenic effect by the healthy selectively being drafted and killed whilst preserving the unfit at home. However, such effects would be limited to particular regions during particular periods.
The concern has mainly been regarding three areas: deteriorating genetic health(1), deteriorating genetic personality ("moral character")(2), and deteriorating genetic intelligence(3)."
-Metapedia.
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