Study of Facebook friendships explores how economic mobility works in the US

A large-scale study of Facebook data sheds new light on the ties between Americans — and how those relationships in turn shape economic outcomes.
A research team led by Harvard economist Raj Chetty published the results today across two papers in the journal Nature, exploring how social connections lead to economic opportunity. The researchers examined data from 21 billion friendships on Facebook, collected from 72.2 million U.S.-based Facebook users between age 25 and 44 who listed their zipcode.
The first paper looks at those outcomes through the lens of “economic connectedness”

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