iGen: Why Today's Super-Connected Kids Are Growing Up Less Rebellious, More Tolerant, Less Happy--and Completely Unprepared for Adulthood--and What That Means for the Rest of Us

by Jean M. Twenge

on screen activities (the black bars in Figure 3.5) are more likely to be unhappy, and those who spend more time on nonscreen activities (the gray bars) are more likely to be happy. There’s not a single exception: all screen activities are linked to less happiness, and all nonscreen activities are linked to more happiness.