Decreases in psychological well-being among American adolescents after 2012 and links to screen time during the rise of smartphone technology
Emotion 18 6 2018: p. 765-780
Campbell, W. K.; Martin, G. N.; Twenge, J. M.
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DOI: 10.1037/emo0000403
Subjects: Adolescents, Mental Health, Screen Media Use, Screen Time/Sedentary Behavior