May We Have Your Attention, Please?

It's official: The average knowledge worker has the attention span of a sparrow. Roughly once every three minutes, typical cubicle dwellers set aside whatever they're doing and start something else—anything else. It could be answering the phone, checking e-mail, responding to an instant message, clicking over to YouTube (GOOG), or posting something amusing on Facebook. Constant interruptions are the Achilles' heel of the information economy in the U.S. These distractions consume as much as 28% of the average U.S. worker's day, including recovery time, and sap productivity to the tune of $650 billion a year, according to Basex, a business research company in New York City.

Soon, however, the same kinds of social networking software and communications technologies that make it deliciously easy to lose concentration may start steering us back to the tasks at hand. Scientists at U.S. research labs are developing tools to help people prioritize the flood of information they face and fend off irrelevant info-bytes. New modes of e-mail and phone messaging can wait patiently for an opportune time to interrupt. One program allows senders to "whisper" something urgent via a pop-up on a screen.