When we finish one task and start another task, there are times when a portion of our mind is still doing the first task. For example, you could be in the process of writing an email when you stop to respond to a message. After dealing with the message, your mind is still preoccupied with the email. Or, if you are studying and then check social media, it can be hard for you to mentally connect with the post because you haven’t yet dropped what you were doing before you transitioned to social media.
This “leftover thinking” is termed attention residue by psychologists and is considered a cognitive hangover that manifests itself when we are shifting between multiple tasks without completing the former task(s) before starting the new task(s). Attention residue is an easy concept to understand, yes, but it has more significant consequences for people.
This concept can help explain why multitasking sometimes makes you feel tired, why you easily forget information, and why you might feel mentally clouded whenever you switch tasks quickly without clearly finishing the task you were doing before switching to a new one. Understanding attention residue in our always-connected world can help us work more effectively, increase our focus, and reduce stress.
What is Attention Residue?
Attention residue occurs whenever part of your brain is still focused on the old task long after you’ve switched to the new task; you can physically switch tasks (e.g., close one tab and open another), but mentally you do not switch instantly. For example, you could be making dinner and then answer a phone call. When you get off the phone, you’ll continue to be impacted by the way you were thinking about preparing dinner until you finish preparing dinner. This concept was popularised by a management scholar, Sophie Leroy, who found that people who sometimes switch tasks and then carry parts of their attention from one task to the next, which in turn lowers performance and increases stress (Leroy, 2009).
Read More: How Social Media Affects Our Attention Span
Why You Can’t Just Flip a Switch and Pay Attention
Our brains? They’re not like computers that can swap jobs in a split second. To pay attention to something can be time-consuming. It’s like our thoughts have their own mind, they stick around for a bit, and then leave for something that is more stimulating. If we try to switch the gear before we’re really done with something, those leftover thoughts will start to mess with or interfere with whatever we’re trying to do next. Think of it this way: even a quick interruption can leave behind a huge amount of mental clutter.
There was a study where participants got interrupted while they were doing something. And guess what? They didn’t do as well, even when they went back to what they were doing before. Their brains were still stuck on that “interruption” that happened. So, every time we hop from one thing to another, and especially when it’s something complicated, we’re not starting with a clean slate, which leads our brain to drag around all the mental baggage.
Read More: How Emotional Distractions Impact Sustained Attention and Memory
Attention Residue: It’s More Real Than You Think
Attention residue messes with your daily grind more than you think. Ever feel like this?
- While Studying: You’re hitting the books, and a notification buzzes. Even after you swipe it away, your focus is gone. Suddenly, texts are more interesting than textbooks.
- At Work: You’re crushing that report, then an email siren calls. You reply, but now your brain’s still sorting your inbox when it should be back on the report.
- While Talking: You are chatting with your friends, then someone says something that rubs you the wrong way. Even after you’ve moved on, you’re still replaying the argument in your head, totally missing what’s being said now.
So see? It’s everywhere!
Why Should We Care?
This is not really some mind trick. It can hit your day-to-day life hard.
- delayed work done: A cluttered mind slows you down. Expect more mistakes.
- overload of stress: Too many things on your mind? Get ready to feel stressed.
- Getting worn out: Moving from thing to thing tyres you out fast.
Understanding this concept can help you navigate more wisely during these situations.
Fighting Back Against Pesky Thoughts
Knowing what attention residue is is half the battle. Here’s how to win:
- Finish What You Started: Getting to the end of something helps your brain let it go. Break things down and try to get each chunk done before you jump to something new.
- Schedule Your Day: Set times for specific things. Only check emails during those times.
- Use of Brain Dump: Write down what’s really bugging you. This way, your brain won’t really have to keep track of everything mentally, as now that you have it written in front of you.
- Get more mindful: Practising to be in the moment can help you drop the past thoughts and move forward, and focus on now, the present.
- Cut off the Noise: Turn off your notifications, put your phone on silent, and get yourself to a quiet spot. Knowing when you might probably get distracted can help cut down on switching gears without warning.
Read More: How Can You Eliminate Distractions And Stay Focused?
Multitasking: Not Really a Thing
Everyone goes on about multitasking. Doing a bunch of things all at once is often seen as the best way to get more things done. But in reality, our brains can’t “truly” multitask with absolute perfection. We’re really just switching back and forth between tasks. Loads of studies say that switching tasks makes us less able to get things done. It also makes our brains work harder, mostly when those tasks need a lot of thought or are similar. That leftover attention is a big reason why. When your brain is split, you don’t do as well.
One experiment showed that even brief mental road bumps from task switching can waste up to 40% of your time. The mind needs time to get its bearings after each switch. Ever tried to feel for someone when your mind’s all over the place? A brain study says it’s nearly impossible to empathise when you’re pulled in too many directions, truly. It turns out, splitting your attention makes it way harder to make a caring bond (Singer et al., 2004). Knowing about attention residue can help us do things better and get closer to people.
Read More: Multitasking All Day? Here’s How It Impacts Your Brain
Bottom line: Focus is a Big Deal
With all the constant notifications and to-dos in the world, attention residue points out something simple. Our brains work great when we can keep them on one thing at a time. The idea behind attention residue is that changing gears isn’t just always about moving from point A to point B. It’s a mental shift, and a shift that requires a huge amount of time, energy, and a clear head.
If we wrap things up clearly before jumping to the next thing, cut down on interruptions and distractions around us, and really work on our focus and try to increase it, we can lower the residue and feel much better. In a world where things always want our attention, knowing when and what to pay attention to, based on priorities, and being able to focus feels like a superpower.
References +
Glaser, J., & Goschke, T. (2002). Selective interference with contextual retrieval in a dynamic environment: Shared cognitive components in prospective memory and task switching? Journal of Experimental Psychology: Learning, Memory, and Cognition, 28(1), 92–109.
Leroy, S. (2009). Why is it so hard to do my work? The challenge of attention residue when switching between work tasks. Organisational Behaviour and Human Decision Processes, 109(2), 168–181. https://doi.org/10.1016/j.obhdp.2009.04.002
Gloria Mark, Daniela Gudith, and Ulrich Klocke. 2008. The cost of interrupted work: more speed and stress. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI ’08). Association for Computing Machinery, New York, NY, USA, 107–110. https://doi.org/10.1145/1357054.1357072
Mrazek MD, Franklin MS, Phillips DT, Baird B, Schooler JW. Mindfulness training improves working memory capacity and GRE performance while reducing mind wandering. Psychol Sci. 2013 May;24(5):776-81. doi: 10.1177/0956797612459659. Epub 2013 Mar 28. PMID: 23538911.
Monk, C. A., Trafton, J. G., & Boehm-Davis, D. A. (2008). The effect of interruption duration and demand on resuming suspended goals. Journal of Experimental Psychology: Applied, 14(4), 299–313. https://doi.org/10.1037/a0014402
Rubinstein JS, Meyer DE, Evans JE. Executive control of cognitive processes in task switching. J Exp Psychol Hum Percept Perform. 2001 Aug;27(4):763-97. doi: 10.1037//0096-1523.27.4.763. PMID: 11518143.
Sirois, F. M., & Pychyl, T. A. (2013). Procrastination and the priority of short-term mood regulation: Consequences for future self. Social and Personality Psychology Compass, 7(2), 115–127.
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