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The cross-race effect is thought to contribute to difficulties in cross-race identification, as well as implicit racial bias. [2] A number of theories as to why the cross-race effect exists have been conceived, including social cognition and perceptual expertise. However, no model has been able to fully account for the full body of evidence. [3]
Therefore, a high heritability measure does not imply that a trait is genetic or unchangeable. In addition, environmental factors that affect all group members equally will not be measured by heritability, and the heritability of a trait may also change over time in response to changes in the distribution of genetic and environmental factors. [60]
Researchers have investigated the relationship between race and genetics as part of efforts to understand how biology may or may not contribute to human racial categorization. Today, the consensus among scientists is that race is a social construct, and that using it as a proxy for genetic differences among populations is misleading. [1] [2]
Race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. [1] The term came into common usage during the 16th century, when it was used to refer to groups of various kinds, including those characterized by close kinship relations. [2]
knowing someone's "race" does not provide comprehensive predictive information about biological characteristics, and only absolutely predicts those traits that have been selected to define the racial categories, e.g. knowing a person's skin color, which is generally acknowledged to be one of the markers of race (or taken as a defining ...
Race, Evolution, and Behavior: A Life History Perspective is a book by Canadian psychologist and author J. Philippe Rushton. Rushton was a professor of psychology at the University of Western Ontario for many years, and the head of the controversial Pioneer Fund. The first unabridged edition of the book came out in 1995, and the third, latest ...
Lynn, longtime editor of and contributor to Mankind Quarterly, has concentrated his research in race and intelligence on gathering and tabulating data purporting to show race differences in intelligence across the world. He has also made suggestions about the political implications of his data, including the revival of older theories of eugenics.
Race is thus partly a surrogate for environmental factors such as differences in socioeconomic status that are known to affect health. It is also an imperfect surrogate for ancestral geographic regions and differences in gene frequencies between different ancestral populations and thus differences in genes that can affect health.