Analyze the fundamental assumptions a researcher must make to conclude that observed differences in average IQ scores between racial groups are caused by inherent, genetic differences.

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Arthur Jensen's controversial theories on intelligence were not an isolated case but part of a broader trend within psychology where researchers asserted inherent racial differences in cognitive abilities. This line of inquiry is highlighted by a 2005 review from Rushton and Jensen, which surveyed three decades of studies on the relationship between race and cognitive ability, demonstrating a continued academic interest in this perspective.

Psychological Assertions of Racial Differences in IQ

Arthur Jensen was an educational psychologist whose work sparked intense controversy regarding race and intelligence. His interpretation of IQ data, which he believed was a valid measure of inherited intelligence, led to a significant public backlash in a society grappling with racism. Jensen's views were further clarified in an interview with the White nationalist publication *American Renaissance*, where he made racist statements, including questioning the educability of many Black people and expressing concern over their birth rate leading to a 'deterioration of the nation'.

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