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Dysgenics also known as cacogenics  is the study of factors producing the accumulation and perpetuation of defective or disadvantageous genes and traits in offspring of a particular population or species.
The adjective "dysgenic" is the antonym of " eugenic ". It was first used c. In the context of human genetics , a dysgenic effect is the projected or observed tendency of a reduction in selection pressures and decreased infant mortality since the Industrial Revolution resulting in the increased propagation of deleterious traits and genetic disorders.
Richard Lynn in his Dysgenics: Genetic Deterioration in Modern Populations identified three main concerns: deterioration in health , in intelligence , and in conscientiousness. Rui Nunes wrote that dysgenics is the selection of genetic traits that are "commonly accepted as a disabling condition," and like eugenics, dysgenics can be positively selected or negatively selected. Improved medical and social care may possibly lead to increased incidence of genetic disorders.
Practices such as genetic counselling and prenatal screening may counteract this effect. Lynn argued that natural selection in pre-industrial societies favored traits such as intelligence and character but no longer does so in modern societies.
Lynn has received both favourable     [ clarification needed ] and unfavourable  reviews. Lynn and Harvey  suggest that designer babies may have an important counter-acting effect in the future. Initially this may be limited to wealthy couples, who may possibly travel abroad for the procedure if prohibited in their own country and then gradually spread to increasingly larger groups. Alternatively, authoritarian states may decide to impose measures such as a licensing requirement for having a child, which would only be given to persons of a certain minimum intelligence.
Cyril M. Kornbluth 's short story " The Marching Morons " is an example of dysgenic fiction, describing a man who accidentally ends up in the distant future and discovers that dysgenics has resulted in mass stupidity. Mike Judge 's film Idiocracy has the same premise, with the main character the subject of a military hibernation experiment that goes awry, taking him years into the future. While in the Kornbluth short story, civilization is kept afloat by a small group of dedicated geniuses, in Judge's film, voluntary childlessness wipes out the bloodlines of above-average intelligence and leaves only automated systems to fill that role in Idiocracy.
From Wikipedia, the free encyclopedia. Not to be confused with Dysgenesis embryology. Retrieved Cacogenics, the study of the operation of factors that cause degeneration in offspring, especially as applied to factors unique to separate races. Also called dysgenics.
Archived from the original on Merriam-Webster Medical Dictionary. Honolulu, Hawaii: University Press of the Pacific. Medicine, Health Care and Philosophy. American Journal of Human Genetics. Modern medical practice versus environmental mutagens: Their possible dysgenic impact".
Journal of Biosocial Science. Estimating losses in general intelligence due to both selection and mutation accumulation". Personality and Individual Differences. Annals of Human Genetics. Vining, Jr". Population Studies. Westport, CT: Praeger, , pp. Journal of Social and Evolutionary Systems. This could be one of the most important books written in the last fifty years. Scientific American.
Lynn's distortions and misrepresentations of the data constitute a truly venomous racism, combined with scandalous disregard for scientific objectivity. Department of Sociology, Hampton University. Gotberg University, Sweden. Archived from the original PDF on Retrieved 14 June The New York Times. Global catastrophic risks. Future of the Earth Future of an expanding universe Ultimate fate of the universe. Anoxic event Cascade effect Cataclysmic pole shift hypothesis Climate apocalypse Deforestation Desertification Ecological collapse Extinction risk from global warming Tipping points in the climate system Flood basalt Global dimming Global terrestrial stilling Global warming Hypercane Ice age Ecocide Ecological collapse Environmental degradation Habitat destruction Human impact on the environment coral reefs on marine life Land degradation Land consumption Land surface effects on climate Ocean acidification Ozone depletion Resource depletion Sea level rise Supervolcano winter Verneshot Water pollution Water scarcity.
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Dysgenics: Genetic Deterioration in Modern Populations
Second Revised Edition Richard Lynn. Richard Lynn's Dysgenics was published in and has been out of print for a number of years. To meet continuing demand, this Second Revised Edition updates the first edition and contains two new chapters; one on the decline of the world's IQ, and the other on the dysgenics of immigration. The term Dysgenics means the deterioration of the genetic quality of the population.