Researchers have found that a proliferation of screen devices over time coincided with a general drop-off in reported happiness in U.S. teens. Life satisfaction and happiness plummeted after 2012. The year that the percentage of Americans who owned a smartphone rose above 50 percent

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Researchers have found that a proliferation of screen devices over time coincided with a general drop-off in reported happiness in U.S. teens. Life satisfaction and happiness plummeted after 2012. The year that the percentage of Americans who owned a smartphone rose above 50 percent