A revolutionary study spanning two decades and nearly two million participants has revealed a disturbing truth: societies plagued by corruption, inequality, poverty, and violence systematically cultivate individuals with 'dark' personality traits including narcissism, psychopathy, and manipulative behaviour.
The comprehensive research, published in the prestigious Proceedings of the National Academy of Sciences (PNAS), analysed data from 1.8 million people across 183 countries and all 50 US states, uncovering how environmental factors fundamentally shape human character in ways previously thought impossible.
Nevada leads dark personality rankings in America, followed by New York, Texas, and South Dakota, whilst countries including Indonesia and Mexico showed significantly higher rates of what researchers term the "Dark Factor of Personality" compared to nations like Denmark and New Zealand.
