Are U.S. adults happy? Sad? Depressed? One can answer these questions by calling thousands of people and surveying their psychological state, a strategy that’s both costly and time-consuming. But with the help of machine learning and artificial intelligence, you can also measure a population’s well-being by turning to social media platforms and tracking what millions of people are talking about.

In this episode of Stanford Engineering’s The Future of Everything, computational social scientist Johannes Eichstaedt and host, bioengineer Russ Altman, discuss how social media can be used to gauge a population’s psychological state, including how events like COVID-19 have impacted well-being. They also discuss how social media has the potential to work as an early warning system for public health crises to help cities and counties deploy resources where they’re most needed. Listen and subscribe here.

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