3650 words Introduction For more than 100 years—from Galton and Spearman to Burt, Jensen, Rushton, Lynn and today’s polygenic score enthusiasts—hereditarian thinkers have argued that general intelligence is a unitary, highly heritable biological trait and that observed individual and group level differences in IQ and it’s underlying “g” factor primarily reflect genetic causation. The Bell … Continue reading The Conceptual Impossibility of Hereditarian Intelligence