A growing body of scientific research shows one of jugglers' favorite time-saving techniques, multitasking, can actually make you less efficient and, well, stupider. Trying to do two or three things at once or in quick succession can take longer overall than doing them one at a time, and may leave you with reduced brainpower to perform each task.
Among the many distractions faced by car drivers is the multitasking done with cellphones and other wireless devices that have contributed to the most crashes and near-crashes. Compared to driving without talking on a cellphone (where the driver spends 70% of time looking ahead), drivers looked at the road ahead less while dialing manually (40% of the time) and hands-free dialing (50%). While talking, drivers became less aware of their surrounding situation; instead looking straight ahead most of the time (90% of time for hand-held phones and 77% of time for hands-free devices, compared to 70% in normal driving).
'When tasks are performed, and especially multiple tasks,' David E. Meyer, a mathematical and cognitive psychologist at the University of Michigan, says, 'decisions have to be made by your mind's CEO about which of the resources are going to get used.' Driving while using a cellular phone is a dangerous example of multitasking, he adds, because it requires 'too many of exactly the same resources, mental and physical.' Seconds lost switching between tasks could be the time needed to avoid danger.
Though the research has been applied mostly to the debate over driving with cellphones, it has quality of life implications too. Here are a few findings:
People who multitask are actually less efficient than those who focus on one project at a time, according to a study published in the Journal of Experimental Psychology.
The process of switching back immediately to a task you've just performed, as many multitaskers try to do, takes longer than switching after a bit more time has passed, say findings published by researchers from the National Institute of Mental Health.
Managing two mental tasks at once reduces the brainpower available for either task, according to a study published in the journal NeuroImage.
These findings don't mean that you can't do several things at the same time but you are kidding yourself if you think you can do them without cost.
For more on why you don't want to integrate everything, go to: http://home.att.net/~coachthee/Archives/integrateeverything.html
John G. Agno, certified executive & business coach, www.MentoringandCoaching.com