One thing at a time
Dr. Steven Yantis, a professor in the Department of Psychological and Brain Sciences at Johns Hopkins University, had this to say about using a mobile phone while driving:
“Directing attention to listening effectively ‘turns down the volume’ on input to the visual parts of the brain. The evidence we have right now strongly suggests that attention is strictly limited — a zero-sum game. When attention is deployed to say, talking on a mobile phone it necessarily extracts a cost on the visual task of driving.”
He’s talking about divided attention, or the way we try to multitask and pay attention to two things at once.
In fact, psychologists tell us that we don’t do two things at once. We frame our thinking for one task then, to switch to another activity, we have to reframe our brain connections for the second task. This happens in fractions of seconds but still the processing power needed is exhausting your cognitive reserve. Frequent changes of focus can be mentally exhausting.
Two factors come into play:
- your ability to pay attention
- the brain’s processing requirements.
Your capacity for paying attention can be affected by
- the concentration needed to tune out/inhibit distractions
- dividing your attention across multiple things
- sustaining your attention on one thing for too long (being vigilant)
- Fatigue – if you’re tired, it’s harder to concentrate and pay attention.
- Getting older both reduces your ability to pay attention and increases your brain processing requirements. It takes more and more inhibition skill to tune out distractions and stay focused.
- Depression also makes it harder to focus attention
Recent Comments