This article describes evidence that excess technology usage reduces happiness.
Technology and Everyday Distractions
Whether or not multitasking creates ADD symptoms in otherwise attentive people is a subject of ongoing debate.
At a minimum, our plugged-in world, filled with noisy and visually cluttered screens, phones, and other devices, is frustrating to many, and especially challenging for those with ADD/ADHD.
Human beings are social animals, and the tenor of our social life is one of the most important influences on our mental health. Without positive, durable relationships, both our minds and our bodies fall apart.