The Savanna-IQ interaction hypothesis: A critical examination of the comprehensive case presented in Kanazawa's The Intelligence Paradox

Kanazawa (2012b) has recently presented the most comprehensive case yet for his Savanna-IQ Interaction Hypothesis. According to the hypothesis, intelligence is a domain-specific adaptation which has been selected for as humans have moved away from the (evolutionarily familiar) Savanna. As such, ability in ‘evolutionarily novel’ tasks and ‘evolutionarily novel’ preferences are positively correlated with high IQ. This article will present a critical examination of the hypothesis, arguing that there is a strong case against anchoring human nature on the Savanna, the hypothesis predicts contradictory findings, there is empirical evidence against it, it is not falsifiable, and it is not necessary to explain that data which Kanazawa presents.