Information is addictive
Scientists say juggling e-mail, phone calls, and other incoming information can change how people think and behave. They say our ability to focus is being undermined by bursts of information. These play to a primitive impulse to respond to immediate opportunities and threats. The stimulation provokes a dopamine squirt that can be addictive. While many people say multitasking makes them more productive, research shows otherwise. Heavy multitaskers actually have more trouble focusing and shutting out irrelevant information, scientists say, and they experience more stress. And scientists are discovering that even after the multitasking ends, fractured thinking and lack of focus persist.
http://www.nytimes.com/2010/06/07/technology/07brain.html?pagewanted=print
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