Why Multitasking Reduces Productivity

Achieving maximum productivity has become a primary obsession within the current digital world. In fast-paced corporate environments found in America, there is extreme pressure on employees to operate at lightning speed due to the necessity of analyzing massive amounts of data, communicating efficiently, and managing various project pipelines simultaneously. Multitasking is often viewed as a necessary part of becoming a competent professional.

However, treating multitasking as an advanced professional skill is perhaps one of the biggest self-management errors that individuals commit in their modern lives. Although toggling rapidly between various pieces of data, modes of communication, and open projects might seem like extremely hard work, it becomes a massive distraction for the human brain. According to neurobiological studies, multitasking not only fails to increase your overall productivity but also significantly fragments your focus and lowers the number of tasks that you accomplish in a single day. It is important to understand how the brain manages task switching.

Cognitive Task Switching in Humans vs. Computers

The main flaw of multitasking stems from the structural limitations of the human brain. Whereas modern computers operate using parallel processing technologies that allow them to manage multiple pieces of software simultaneously, a person’s prefrontal cortex is not able to process multiple pieces of information in parallel. Therefore, when you think that you perform two or three complex cognitive tasks at the same time, e.g., watching a live company meeting presentation while also drafting a project report, your brain switches very rapidly between those tasks.

This switch is performed using a two-stage process consisting of goal shifting (making a decision to move from one activity to another) and rule activation (changing the processing rules). The entire process of changing a task in the human mind happens within milliseconds, thus fooling people that both tasks occur simultaneously. However, forcing your brain to turn off and turn on different processing frameworks makes your mind consume a lot of its power. Therefore, you exhaust your limited store of daily willpower pretty fast.

The Heavy Costs of Attention Residue and Structural Lagging

Each time your attention is taken away from an ongoing activity because of a distraction, your cognitive capacities experience an efficiency decrease called attention residue. In essence, whenever you interrupt the work on a complicated project to answer a notification in a messaging app or an email letter, your brain does not fully move from the former activity to the latter. Some attention remains tied to the rules of the former process.

The Delay Effect: Attempting to return to a complex task requires a few minutes of refocusing, remembering previously processed data, and restarting.

Volume Penalty: Forced multitasking increases your total project completion time by 40% according to recent studies.

Restriction of Depth: Attention residue does not let your mind achieve the state of flow that would help you perform deep tasks.

The combination of various fragments negatively impacts the overall capabilities of your mind, as the latter is continuously trying to process unrelated tasks. Your reading skills get weakened, your short-term memory starts failing, and your problem-solving capabilities deteriorate significantly. By letting your mind get distracted every few minutes, you are essentially losing your opportunities to perform valuable tasks efficiently.

Lowering Your Operational Effectiveness and Decreasing Solution Quality

In addition to slowing down your processes, multitasking can lead to reduced quality and accuracy of your solution. By fragmenting your focus, you limit your brain’s possibilities to track logical flaws, inconsistency, and other peculiarities. A software developer trying to produce clean codes in parallel with engaging in a text discussion will surely make mistakes, introducing bugs into the codebase. Similarly, a financial analyst who multitasks will be unable to process numbers effectively, making frequent mistakes while analyzing spreadsheet models.

Moreover, multitasking restricts your capacity for solving problems creatively. In order to design elegant and innovative strategies and solutions, you have to use the maximum capacity of your brain and keep it focused on one particular task. If you continuously interrupt yourself even for a couple of minutes per hour, your thoughts will become surface-level. You will rely on your simplest and most convenient solution rather than coming up with the right one.

Switching from Reactive Multitasking to Controlled Single-Tasking

Overcoming the problem of multitasking means ignoring some of the legacy requirements of corporate life and setting up technical and behavioral barriers aimed to protect your mental space. Professional success never depends on your online availability; what matters most is your ability to provide high-quality solutions. Moving to an efficient single-tasking mode requires you to change your workflow procedures and adopt new habits.

Single-Tab Protocol: Close all unnecessary browser windows, communication tools, and email accounts before starting working on your analysis or coding project.

Out-of-Sight Device Principle: Place all distracting devices outside of your field of view during intensive work.

Batched Messaging System: Set definite intervals during your workday devoted solely to dealing with notifications.

These three changes will minimize the risk of getting distracted and help you focus entirely on one important task. In such way, you will be able to accomplish much more in a shorter period of time while also eliminating stress associated with multitasking and ensuring high quality of your projects. Single-tasking will save your brainpower while also giving you more time to rest.

Frequently Asked Questions

1. What if my manager insists that I should multitask and immediately reply to all Slack alerts?

If your manager asks you to multitask and respond instantly to all Slack notifications, try to have an honest conversation about it. Explain to your manager that doing so negatively affects the speed and quality of your productivity and present your statistics to support your claims. Offer your manager to reach an agreement under which you will check all messages in specific time intervals, e.g., every hour.

2. Can white noise or instrumental music reduce the negative effect of multitasking?

Although nothing can solve the problem of constant switching in the mind of a multitasker, background noise and sound can help you eliminate distractions coming from the external world. By playing looped tracks, white noise sound or instrumental lofi music, you will be able to avoid distractions of the latter type and remain focused on your main task. Try to avoid songs with complex lyrics since the latter uses linguistic centers of the brain reducing your performance.

3. Are there situations in which multitasking is acceptable?

Yes, your brain can easily cope with performing multiple activities at once provided that at least one of the tasks is automatic and requires no brainpower. For instance, you may watch an informative video or listen to a book and at the same time file various data, sort papers, or walk on a treadmill. If a minor activity gets stuck due to a complication that requires analytical thinking, then you should stop doing it.

4. How can I learn how to focus on one thing?

First of all, treat your focus ability as the capacity of a physical muscle requiring consistent training. Start with easy-to-complete tasks such as focusing on one particular piece of work for 20 minutes straight. As soon as you manage to accomplish this goal, gradually expand the time spent on tasks by 5 minutes each week. Continue increasing time spans until you can concentrate deeply for 60-90 minutes.