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: Jensen was a proponent of Charles Spearman’s concept of g (general intelligence), arguing that a single general factor underlies all cognitive tasks.

: Jensen's most controversial claim was that roughly 80% of the variance in human IQ is due to genetic factors rather than environmental ones. Controversy and "Jensenism"

: He distinguished between two types of mental abilities: Jensen.rar

: Short-term memory, rote learning, and simple associative skills .

: He suggested that compensatory education programs like Head Start had failed because they focused on environmental factors, whereas he believed IQ was largely genetically determined and varied significantly across different racial groups. : Jensen was a proponent of Charles Spearman’s

In 1969, he published a 123-page article in the Harvard Educational Review titled " How Much Can We Boost IQ and Scholastic Achievement? ".

: Higher-order reasoning, abstract problem-solving, and conceptual manipulation. : He suggested that compensatory education programs like

: His findings were widely condemned as "Jensenism" and led to protests, death threats , and labels like " the world’s most loathsome scientist ".