Although many participants claimed that they have multitasked
in response to their multiple team membership, participants were not always describing the same variety of multitasking.
That is, brighter employees multitasked
less than the other employees.
A study at the University of London found that participants who multitasked
during cognitive tasks experienced IQ score declines that were similar to what they'd expect if they had smoked marijuana or stayed up all night.
This enabled respondents to assess for each medium whether they multitasked
and, if so, which media they combined and how often.
One of their key findings was that those who multitasked
the most, including talking on a cell phone while driving, were less able to do it well, and had an inflated sense of their ability.
And a 2009 study at Stanford University looked at 100 students who multitasked
during the day, juggling various forms of technology, the Internet, school work, classes, etc.
Those who media multitasked
the most tended to be more efficient at multisensory integration.
Separating light from heavy media multitaskers, the study found that individuals who multitasked
more often were more distractible than those who did so less often.