Pseudoscience Dictionary: Scientific Racism

Pseudoscience: Consists of statements, beliefs, or practices that are claimed to be both scientific and factual but are incompatible with the scientific method (unproven, not testable, or opposed to the consensus of traditional science).

Scientific Racism

Definition: Scientific racism, sometimes called biological racism, is the pseudoscientific practice of using purported biological, genetic, or anthropological evidence to justify claims that human racial groups possess inherently different levels of intelligence, morality, behavior, or overall superiority. Historically, proponents attempted to classify humanity into biological hierarchies using skull measurements, physical appearance, intelligence testing, and theories of hereditary traits. These claims were used to justify slavery, colonialism, racial segregation, eugenics, and discriminatory policies. Although scientific racism was particularly prominent during the 18th, 19th, and early 20th centuries, similar arguments persist today through misleading interpretations of genetics, intelligence research, and human population differences.

Reasoning: Modern genetics and biological anthropology do not support the central claims of scientific racism. According to the American Association of Biological Anthropologists (AABA), human racial categories do not accurately represent biological variation, and humans cannot be divided into discrete, biologically independent racial groups. Although genetic differences exist among individuals and populations, these variations do not correspond to fixed racial boundaries or establish a biological hierarchy of human groups.

Further, the American Society of Human Genetics (ASHG) stated in a 2018 scientific publication that genetic research does not support claims of racial supremacy and that using distorted genetic findings to promote racial hierarchies misrepresents established science. Similarly, a 2023 consensus report from the National Academies of Sciences, Engineering, and Medicine concluded that race should not be used as a proxy for genetic variation because socially defined racial categories do not accurately reflect the complex patterns of human ancestry. The report also warned against assuming that human populations form distinct, homogeneous, or hierarchically ordered biological categories. Furthermore, the National Human Genome Research Institute (NHGRI) explains that racial and ethnic categories are social constructs rather than reliable measures of genetic ancestry. While genetic ancestry can provide meaningful information about population history and certain inherited health risks, it does not validate sweeping claims about racial intelligence, behavior, or superiority. Differences observed between populations may involve complex interactions among genetic, environmental, social, historical, and economic factors, making simplistic racial explanations scientifically unreliable. The existence of measurable human genetic diversity therefore does not support the racial hierarchies promoted by scientific racism.

More Information

• AABA Statement on Race and Racism – American Association of Biological Anthropologists
• ASHG Denounces Attempts to Link Genetics and Racial Supremacy – American Journal of Human Genetics
• Using Population Descriptors in Genetics and Genomics Research – National Academies of Sciences, Engineering, and Medicine
• Use of Population Descriptors in Genomics – National Human Genome Research Institute
• Recommendations for the Use of Race, Ethnicity, and Ancestry in Genetics Research – National Academies

Conclusion: Scientific racism is pseudoscience. Modern genetics and biological anthropology do not support the classification of humans into distinct racial hierarchies or claims that socially defined racial groups possess inherent biological superiority or inferiority. Although genetic variation among human populations is real and scientifically measurable, it does not establish the sweeping racial differences in intelligence, morality, or human worth historically promoted by scientific racism. Such claims rely on misleading interpretations of genetic evidence, unsupported generalizations, and scientifically invalid racial classifications.