Paragraph of the Day/Parágrafo do Dia
Using data from a national survey, it is shown that intelligence tends to be positively related to the probabilities of having tried alcohol, marijuana, cocaine and several other recreational drugs. Evidence is also presented that those relationships typically disappear or change sign at high levels of intelligence.
From Intelligence and past use of recreational drugs
The "reversing signs" phenomenom is stronger for cigarettes.
(Plots need error bars)
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