Los Angeles Times

Less smartphone time equals happier teenager, study suggests

A precipitous drop in the happiness, self-esteem and life satisfaction of American teens came as their ownership of smartphones rocketed from zero to 73 percent and they devoted an increasing share of their time online.

Coincidence? New research suggests it is not.

In a study published Monday in the journal Emotion, psychologists from San Diego State University and the University of Georgia used data on mood and media culled from roughly 1.1 million U.S. teens to figure out why a decades-long rise in happiness and satisfaction among U.S. teens suddenly shifted course in 2012

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