Read it and gloat. Last week, researchers at Stanford University published a study showing that the most persistent multitaskers perform badly in a variety of tasks. They don't focus as well as non-multitaskers. They're more distractible. They're weaker at shifting from one task to another and at organizing information. They are, as a matter of fact, worse at multitasking than people who don't ordinarily multitask.
The Mediocre Multitasker: Study Shows Persistent Multitaskers Perform Badly In A Variety Of Tasks