The myth of multitasking: why fragmented studying does not work

"I can study while answering messages." Many students believe this. In reality, they are often not doing several things at once. They are interrupting studying again and again.

Multitasking creates an illusion of efficiency because the student stays busy. But busy does not mean focused. If they read a chapter while checking chats, videos, notifications, and songs with lyrics, the brain has to keep re-entering the main task.

For a teacher or tutor, the point is not moralizing about phones. The point is teaching a concrete skill: protecting attention when the task requires comprehension, memory, and connections.

What really happens: task switching, not a superpower

When two activities require attention, students do not process them in parallel with the same quality. They switch from one to the other. That switch has a cost: they must interrupt, reorient, recover the point, rebuild the thread, and start again.

The American Psychological Association describes this as switching cost: changing tasks may feel quick, but every switch requires mental control and can reduce efficiency and accuracy.

Concrete example:

Studying without interruptions:
read -> understand the paragraph -> connect -> take notes

Studying with interruptions:
read -> notification -> answer -> go back -> reread -> video -> lose the thread

The second sequence is not only longer. It is more fragile. Every interruption uses working memory and makes it harder to hold information, questions, and links together.

To connect this point with lesson design, read cognitive load: how not to overload students.

Why digital multitasking weighs more in class

The problem is not the laptop or phone by itself. The problem is off-task use during work that requires attention.

Sana, Weston, and Cepeda studied laptop multitasking in a lecture context. Students who performed unrelated activities learned less, and nearby peers were also affected by the distraction.

This detail matters for teachers: multitasking does not always remain an individual issue. It can become attentional noise for those sitting nearby, who see the screen, notice notifications, or lose the rhythm of the explanation.

In class, the signs are recognizable:

1. the student seems present, but misses key points;
2. notes become fragmented;
3. they ask for information already given;
4. they do not connect the example with the rule;
5. maps or outlines contain isolated pieces;
6. they finish later and with more errors.

What happens when students study in fragments

Studying "in fragments" does not mean taking breaks. Breaks are useful when they are planned. Studying in fragments means interrupting the task continuously without structure.

The most common effects are four.

More superficial comprehension. The student reads, but does not stay with the content long enough to build relationships. They understand individual sentences, not the structure of the topic.

More time to finish. Every return to the task requires recovery: "where was I?", "what was I looking for?", "why did I underline this sentence?".

More errors. Instructions are read less carefully, steps are skipped, and notes lose continuity.

Weaker memory. If attention breaks, material enters with less organization. During review, the student recognizes words they have seen, but struggles to rebuild the reasoning.

Ophir, Nass, and Wagner found differences in cognitive control associated with heavy media multitasking, including weaker performance in tasks that require filtering irrelevant information.

The question to ask is not "how long did you study?". It is: "for how many consecutive minutes did you stay on the same task?".

How to explain multitasking without lecturing students

Saying "the phone distracts you" is often not enough. Students already know it, but they underestimate the cost of micro-interruptions.

A quick classroom test works better:

Step 1: write numbers from 1 to 20.
Step 2: write letters from A to T.
Step 3: alternate number and letter: 1-A, 2-B, 3-C...

Then compare time and errors. Alternating feels simple, but it requires more control. This makes switching cost visible without blaming anyone.

Close with an operational sentence:

I am not asking you to never use your phone.
I am asking you to protect the 20 minutes in which your brain has to build the
reasoning.

This tone works better because it does not turn attention into obedience. It turns it into a strategy.

Strategies for training monotasking

Monotasking does not mean studying for hours without breaks. It means doing one thing at a time for a realistic amount of time.

A simple routine:

1. Choose one goal: "understand the causes", not "study history".
2. Prepare only the necessary materials.
3. Turn off notifications and unrelated tabs.
4. Work 20-25 minutes on one task.
5. Take a real 5-minute break.
6. Restart with a new micro-goal.

For some students, 10-15 initial minutes are enough. The goal is to increase the quality of time, not to win an endurance contest.

In class, use shorter versions:

1. 5 minutes of silent reading without a pen;
2. 5 minutes to mark only keywords;
3. 5 minutes to build one map branch;
4. 2 minutes to explain it to a peer.

This also helps students with attention difficulties: the task is limited, visible, and checkable. For more, read declining attention: classroom strategies.

One thing at a time: the role of maps

A map helps because it offers one visual focus. Instead of keeping book, video, notes, chat, and summary open, the student works on center, branches, keywords, and links.

This does not remove distraction. It reduces material dispersion.

With Kiuwo, the workflow is this:

1. start from a chapter, handout, slides, or notes;
2. create a first map;
3. choose one branch to work on;
4. close sources that are not needed;
5. explain that branch without jumping elsewhere;
6. update the map and move to the next branch.

Example:

Block goal:
Understand the causes of the Industrial Revolution.

Open branch:
Causes
  - agriculture
  - population
  - capital
  - innovations

Task:
Explain each node in one sentence and add one cause-effect link.

If you start from a long text, combine this routine with from textbook chapter to mind map. If you want to turn it into review, connect it with spaced repetition.

What teachers can do in class

Teachers do not control students' whole digital life. They do control the structure of classroom work.

Concrete actions:

1. name the type of attention required: listening, exercise, research, production;
2. separate digital moments from screen-free moments;
3. give visible micro-goals;
4. use short timers;
5. ask for a small final product: three keywords, one branch, one question;
6. have students reflect on time and errors after the task;
7. avoid activities that require ten implicit steps at once.

The rule is not "never use technology". The rule is "technology serves the task". When it does not serve the task, it stays outside the focus block.

An anti-multitasking checklist for studying

Before starting:

1. what is the precise task?
2. which materials are truly needed?
3. which distraction will I remove for 20 minutes?
4. how will I know I am finished?

During:

1. am I still working on the same goal?
2. did I change tabs without a reason?
3. am I rereading because I interrupted myself?
4. can I write down the distraction and return to it during the break?

After:

1. what did I understand?
2. which link can I explain?
3. which point is still unclear?
4. what is the next block?

This checklist makes monotasking observable. It does not ask for generic willpower. It asks for small repeatable choices.

Frequently asked questions about multitasking and studying

Sources used

• American Psychological Association, Multitasking: Switching costs
• Sana, Weston and Cepeda, Laptop multitasking hinders classroom learning
• Ophir, Nass and Wagner, Cognitive control in media multitaskers
• Sweller, Cognitive load during problem solving
• Unsplash License

Want to help students work on one concept at a time? With Kiuwo you can turn chapters, notes, and lessons into maps that become a visual focus for explanation, review, and less scattered study.

Try it now, it's free