The one-drop theory (or one-drop rule) is a historical colloquial term for the standard, found throughout the United States of America, that holds that a person with even a tiny portion of non-white ancestry ("one drop of non-white blood") should be classified as "colored", especially for the purposes of laws forbidding interracial marriage. It is an ethnocentric concept based on the idea of human hierarchy.
The one-drop theory arises curious cases. Although it is not the case, since the British Royal Family lives in the United Kingdom rather, for the despair of a White supremassist British-Israelist, all the British Royal Family would be of African ascenstry, because of Margarida de Castro e Souza, a Portuguese of mixed origins, who was anscestor of Charlotte of Mecklenburg-Strelitz, the great-great-great-great grandmother of the current Queen of the United Kingdom, Queen Elizabeth II, known at her time for having a "moorish looking".
This notion of invisible/intangible membership in a "racial" group has seldom been applied to people of Native American ancestry (see Race in the United States for details). The notion has also been applied to the idea of solely black ancestry. Langston Hughes wrote, "You see, unfortunately, I am not black. There are lots of different kinds of blood in our family. But here in the United States, the word 'Negro' is used to mean anyone who has any Negro blood at all in his veins. In Africa, the word is more pure. It means all Negro, therefore black. I am brown."Langston Hughes, The Big Sea, an Autobiography (New York: Knopf, 1940).
Prior to 1930, individuals of mixed European and African ancestry had usually been classed as mulattoes, sometimes as black and sometimes as white. The main purpose of the one-drop rule was to prevent interracial relationships and thus keep Whites "pure". In 1924 Plecker wrote unscientifically, "Two races as materially divergent as the white and negro, in morals, mental powers, and cultural fitness, cannot live in close contact without injury to the higher". In line with this concept was also the assumption that Blacks would somehow be "improved" through white intermixture.
Walter Plecker had been preceded by Madison Grant who had written in his book The Passing of the Great Race: The cross between a white man and an Indian is an Indian; the cross between a white man and a negro is a negro; the cross between a white man and a Hindu is a Hindu; and the cross between any of the three European races and a Jew is a Jew. Madison Grant, The Passing of The Great Race, 1916)
In the case of Native American admixture in whites the one-drop-rule was extended only as far as those with one-quarter Indian blood due to what was known as the "Pocahontas exception." The "Pocahontas exception" existed because many influential Virginia families claimed descent from Pocahontas. To avoid classifying them as non-white the Virginia General Assembly declared that a person could be considered white long as they had no more than one-sixteenth Indian blood.
In 1967 the U.S. Supreme Court, in its ruling on the case of Loving v. Virginia, conclusively invalidated Plecker's Virginia Racial Integrity Act, along with its key component, the one-drop rule, as unconstitutional. Despite this holding, the one-drop theory is still influential in U.S. society. Multiracial individuals with visible mixed European and African and/or Native American ancestry are often still considered non-white unless they explicitly declare themselves white or Anglo, and are typically identified instead as mixed-race, mulatto or mestizo, or Black or American Indian, for example. By contrast these standards are widely rejected by America's Latino community, the majority of whom are of mixed ancestry, but for whom their Latino cultural heritage is more important to their ethnic identities than "race". The one-drop rule is not generally applied to Latinos of mixed origin or to Arab-Americans.
From Reconstruction until about 1930, the children of black/white interracial parents and of mulatto parents were usually identified as mulatto. It is becoming increasingly common for people to identify themselves as multi-racial, mulatto or mixed rather than as black or white. That the fraction of mixed children census-labeled as solely black dropped from 62 percent in 1990 to 31 percent in 2000 (when multiple "races" were first allowed) suggests that the One-Drop-Theory and denying one's European ancestry is no longer accepted the way it used to be.
However, despite the one-drop rule being illegal ever since the U.S. Supreme Court in 1967 overturned the Virginia Racial Integrity Act, as recently as 1986, the U.S. Supreme Court upheld the ODR by refusing to hear a case against Louisiana’s “racial” classification criteria as applied to Susie Phipps (479 U.S. 1002). In addition several authors and journalists have found it very profitable to "out" as black famous historical mulattoes and multiracial whites, who were regarded as white in their society and self-identified as such and who were culturally European-American, merely because they acknowledged having (often slight) African ancestry (Anatole Boyard, Patrick Francis Healy, Michael Morris Healy, Jr., Calvin Clark Davis, John James Audubon, Mother Henriette Delille—a Louisiana Creole).
Many scholars publishing on this topic today (including Naomi Zack, Neil Gotanda, Michael L. Blakey, Julie C. Lythcott-Haims, Christine Hickman, David A. Hollinger, Thomas E. Skidmore, G. Reginald Daniel, F. James Davis, Joe R. Feagin, Ian F. Haney-Lopez, Barbara Fields, Dinesh D'Souza, Joel Williamson, Mary C. Waters, Debra J. Dickerson) affirm that the one-drop rule is still strong in American popular culture. Affirmative action court cases on the other hand (where an apparently white person claims invisible Black ancestry and claims federal entitlements and/or EEOC enforcement) are mixed. In some cases, such as 1985 Boston firefighters Philip and Paul Malone, courts have held that such claimants are guilty of "racial fraud" despite their claim of a Black grandparent. In other instances, such as the 1988 Denver case of schoolteacher Mary Walker — a person of fair complexion, green eyes, light brown hair, and no documented Black ancestry — courts have ordered employers to accept claimants as Black for EEOC purposes. And other claimants, such as 1997 Detroit businessman Mostafa Hefny, a Black-looking immigrant actually from Africa (Egypt), are denied benefits because North Africans are considered to be White.
Arthur Jensen argues that, "if the differences between the means of various populations were not larger than the mean difference between individuals within each population, it would be impossible to distinguish different populations statistically." Others assert that Jensen makes a logical error in believing that any observed genetic difference must be representative of all genetic differences - that is to say, it is possible to distinguish arbitrary groups which have minor differences between means, but more differences within those groups. For example, blue and green bags of coins may differ as groups, by 2 cents, but within groups larger amounts:
| Color-> | Blue | Green |
|---|---|---|
| 2 | 4 | |
| 4 | 6 | |
| 70 | 72 | |
| 72 | 74 | |
| Mean-> | 37 | 39 |
| Type-> | Low Amount | High Amount |
|---|---|---|
| 2 | 70 | |
| 4 | 72 | |
| 4 | 72 | |
| 6 | 74 | |
| Mean-> | 4 | 72 |
Some claim that the genetic linkage trees Cavalli-Sforza provides clearly show distinct branches for all the three main races Rushton describes. Others claim that when Cavalli-Sforza applied the wholly objective mathematical procedure of principal component analysis to his genetic data, the major racial groupings Rushton descibes formed very clear and unambiguous clusters. Rushton claims his focus on race is consistent with the work of forensic experts, research in bio-medicine, and biologists studying geographic variation in other species. Harvard biologist E.O. Wilson told journalist Peter Knudson. "The basic reasoning by Rushton is solid evolutionary reasoning; that is it's logically sound. If he had seen some apparent geographic variation for a non-human species-a species of sparrow or sparrow hawk, for example-no one would have batted an eye."
These claims are highly contested by other scientists and researchers, including those whom Rushton cites. Rushton's research has also been criticised by those that consider his conclusions and methods as "sloppy" and "unscientific"Sloppy Statistics, Bogus Science and the Assault on Racial Equity.
African-American history | History of African-American civil rights | Kinship and descent | Multiracial affairs
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"One-drop theory".
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