Multitaskers bad at multitasking

In a study conducted by the BBC, people who routinely engaged in multi-tasking, such as using the internet, watching TV and using a mobile phone, consistently did worse on a series of tasks than those people who were low multi-taskers. Low multi-taskers were better at ignoring irrelevant material, had better working memory and were better able to switch between tasks. "The shocking discovery of this research is that [high multitaskers] are lousy at everything that's necessary for multitasking," Professor Nass said.

For the complete description of this research from the BBC follow this link:
http://news.bbc.co.uk/go/em/fr/-/2/hi/technology/8219212.stm