U.S. adults

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Social media use, particularly posting on social media, is correlated with higher rates of irritability — being prone to anger — among a broad swath of U.S. adults, new research finds

Ketamine use on the rise in U.S. adults; new trends emerge

Obesity dipped in U.S. adults last year for the first time in more than a decade

Survey: Growing number of U.S. adults lack literacy skills

GPT-4 passes Moral Turing Test after a representative sample of U.S. adults rated the AI’s moral reasoning as superior in quality to humans’ along almost all dimensions, including virtuousness, intelligence, and trustworthiness