Brett Aho explores what science can tell us about why we use psychoactive drugs despite the stigmas against doing so. One possibility? Getting high could be seen “as a form of evolutionarily novel behavior”:
The theory builds off of what evolutionary psychologist Satoshi Kanazawa calls the Savanna-IQ Interaction Hypothesis. It combines his Savanna Principle, which states that the human brain has difficulty dealing with entities and situations that didn’t exist in the ancestral environment, with the theory of evolution of general intelligence, which suggests that general intelligence evolved as a psychological adaptation to solve evolutionarily novel problems. Within the realm of evolutionary psychology, this hypothesis predicts that individuals of higher intelligence are more likely to engage in novel behavior that goes against cultural traditions or social norms.
Interestingly, the findings of a forty-year-long study funded by the British government paralleled this hypothesis, and found that “very bright” individuals with IQs above 125 were about twice as likely to have tried psychoactive drugs than “very dull” individuals with IQs below 75. As Kanazawa explains, “Intelligent people don’t always do the ‘right’ thing, only the evolutionarily novel thing.”
The Dish 