The above is a standalone chart from my recent NISO Webinar, “Managing Change with Project Management Skills.” Notice the dates. The cost of context switching is not news, but there is increasing awareness of how this manifests.
     Since Weinberg wrote his book, there have been many additional studies exploring multitasking concluding it is largely a myth. What appears to be multitasking is simply switching between two or more tasks, not giving full attention to any. We now know more about how apparent multitasking negatively affects IQ, brain development, and creative thinking.