Gloria Mark, an attention researcher [and professor emeritus] at the University of California, Irvine, is author of “Attention Span: A Groundbreaking Way to Restore Balance, Happiness and Productivity”. She says there is scientific evidence attention spans are getting shorter. … Mark maintains that a shorter attention span has three downsides: “The first is that people make more errors when they do attention shifting; second downside is that it takes longer to do something, because we have to reorient to every new task every time we shift; the third downside — maybe this is the worst of all — is that stress increases. When people are working on multiple tasks and they have to shift their attention, their blood pressure rises.”
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