Whereas the infrequent multitaskers exhibited relatively strong “top-down attentional control,” the habitual multitaskers showed “a greater tendency for bottom-up attentional control,” suggesting that “they may be sacrificing performance on the primary task to let in other sources of information.” Intensive multitaskers are “suckers for irrelevancy,” commented Clifford Nass, the Stanford professor who led the research. “Everything distracts them.”
