Whatever is retained is harder for the multitasker to recall

Those who consistently attempt multitasking find it harder to ignore irrelevant information and take longer moving between tasks—in other words, for all their frantic activity, they’re actually wasting time. And because the brain’s competing memory systems store information differently, whatever is retained is harder for the multitasker to recall. While these energetic minds might feel that they’re on top of the world of information, in reality they are at its mercy.

Margaret Heffernan: Beyond Measure: The Big Impact of Small Changes