Eugenics

Eugenics is a set of beliefs and practices designed to change the genetic quality of a human population.

The core idea is to influence which human traits are passed down to future generations. This is done by managing the fertility of different groups of people. Some people are encouraged to have more children, while others are prevented from having them. While it began as a popular social movement, it is now largely discredited. Most modern scientists view its historical applications as deeply flawed and harmful.

To understand how eugenics works, it is helpful to look at its two main methods. The first is called positive eugenics. This method aims to increase the number of people with traits considered "superior" or "fit." These traits might include intelligence, health, or social success. Proponents of positive eugenics suggest using tools like financial incentives or even advanced technology like in vitro fertilisation.

The second method is negative eugenics. This aims to reduce the number of people with traits deemed "unfit" or undesirable. This is achieved through marriage prohibitions, segregation, or forced medical procedures.

These two methods can be applied in coercive ways, meaning people are forced to comply. In Nazi Germany, for example, the state made abortion illegal for women it deemed genetically superior. Negative eugenics has historically included forced sterilisation and forced abortions. These practices were used to target people based on physical, mental, or perceived moral qualities. Such actions were often used to control specific groups of people. This demonstrates how eugenics can shift from a social philosophy into a tool of state control.

Ideas similar to eugenics appear in ancient history, though the evidence is often debated.

The historian Plutarch wrote that leaders in ancient Sparta inspected every newborn child. He claimed that children deemed unfit were left to die in a chasm. However, modern anthropologists have found very little physical evidence to support this specific claim. Similarly, the Roman writer Tacitus described Germanic tribes killing members they deemed cowardly. Modern historians often view these ancient accounts as unreliable. Even so, the concept of selecting for specific traits has long been part of human thought.

The modern academic study of eugenics began in the late 19th century.

In 1883, a British scientist named Francis Galton coined the term. Galton was a polymath who drew ideas from his cousin, Charles Darwin. Darwin had described natural selection, but Galton applied these ideas specifically to human heredity. He believed humans could use science to control their own biological future. This led to the creation of many influential organizations. The British Eugenics Education Society was formed in 1907, and the American Eugenics Society followed in 1921.

These groups held international conferences in London and New York City to spread their ideas.

By the early 20th century, eugenics had become a massive global movement. It was supported by many governments, universities, and even religious leaders.

In the United States, state-level legislators began implementing eugenic policies in the early 1900s. Other countries, including Canada, Australia, Sweden, Brazil, and Japan, also adopted these practices. During the 1920s and 1930s, many nations used sterilisation to manage populations they deemed undesirable. Tragically, the movement was also used to support scientific racism. This included the pursuit of a "pure" Aryan or Nordic race. These ideologies eventually contributed to the horrors of genocide.

Not everyone supported the rise of eugenics. Several thinkers and scientists argued against it from the beginning.

The American sociologist Lester Frank Ward was a prominent early critic. Other writers, such as G. K. Chesterton, also spoke out against the movement. Some biologists, like Lancelot Hogben, argued against the racist foundations of eugenics. Even some scientists who were eugenicists, like J. B. S. Haldane, doubted that sterilisation would actually eliminate undesirable traits. They warned that relying on such methods was a deception to society. Today, the field has shifted toward "new eugenics" or "liberal eugenics." This modern approach focuses on individual parental choice and genetic testing rather than state-mandated programs.