Harvard Mental Health Letter

The psychology of risk perception

Understanding why certain perils seem more perilous than others.

Two environmental accidents in different parts of the world — along with media and public reaction to them — have dramatically illustrated some of the basic psychological principles of risk perception. In 2010, the Deepwater Horizon oil spill sent millions of gallons of oil into the Gulf of Mexico. In 2011, the Fukushima Daiichi nuclear power plant in Japan — damaged after a devastating earthquake and tsunami — leaked radiation into the atmosphere.

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