Arthur Jensen's contentious conclusion focused on racial differences in Level II intelligence among ethnic groups, sparking debates on genetics and IQ tests.
Arthur Jensen's most controversial conclusion was his assertion that Level II intelligence, responsible for conceptual and analytical abilities, exhibited differences among ethnic groups. He claimed that this type of intelligence was prevalent among Asians, then Caucasians, then African Americans, sparking debate and accusations of racial bias.
In 1969, Jensen's publication on intelligence and genetics stirred discussions on the inherited nature of intelligence and the validity of IQ tests. Critics like Robert Williams challenged Jensen's findings, emphasizing the complexity of human intelligence beyond Levels I and II.
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