In a previous post I quoted Nicholas Carr about the cognitive demands created by hyperlinks. Carr also makes some helpful observations about why we should avoid checking our email during the middle of any task:
“Studies of office workers who use computers reveal that they constantly stop what they’re doing to read and respond to incoming e-mails. It’s not unusual for them to glance at their in-box thirty or forty times an hour (though when asked how frequently they look, they’ll often give a much lower figure). Since each glance represents a small interruption of thought, a momentary redeployment of mental resources, the cognitive cost can be high. Psychological research long ago proved what most of us know from experience: frequent interruptions scatter our thoughts, weaken our memory, and make us tense and anxious. The more complex the train of thought we’re involved in, the greater the impairment the distractions cause. …Many studies have shown that switching between just two tasks can add substantially to our cognitive load, impeding our thinking and increasing the likelihood that we’ll overlook or misinterpret important information.” Continue reading