Only 2.5% of People Can Truly Multitask at Work

Multitasking feels like leverage: two things done in the time of one. Neuroscience says it's mostly an illusion. What you call multitasking is your brain switching rapidly between tasks — and every switch carries a cost you don't feel but do pay.

For a team that bills by the hour, that cost isn't abstract. It shows up as slower work, more rework, and hours that quietly stop being billable.

Psychologists Jason Watson and David Strayer tested roughly 200 people on two demanding tasks at once — driving a simulator while doing a running memory-and-math challenge. For 97.5% of participants, performance dropped measurably when they combined the tasks. Only about 2.5% showed no cost at all. The researchers named that rare group 'supertaskers.' The uncomfortable part: almost everyone assumes they're in the 2.5%.

What the other 97.5% actually lose

If you're not a supertasker — and the odds say you aren't — the real cost isn't the second task. It's the switching between them. The American Psychological Association's research on task-switching found that the brief mental blocks created by shifting between tasks can eat up to 40% of someone's productive time.

Put a price on it. Take a 10-person team at a $150 blended hourly rate. If switching quietly costs each person even one focused hour a day, that's 10 billable-equivalent hours gone daily — $1,500 a day, roughly $7,500 a week — spent reorienting rather than producing. No one budgets for it because no one sees it happen.

Why the brain can't actually parallel-process

Every switch reloads context

The APA describes two hidden steps behind each switch: goal shifting ('I'll do this now instead of that') and rule activation (turning off the rules for the old task and loading the rules for the new one). Each step takes a fraction of a second — trivial once, expensive a few hundred times a day.

Heavy multitaskers get worse, not better

You might expect constant multitaskers to build a tolerance. The opposite shows up in the research. A Stanford study by Ophir, Nass, and Wagner found that heavy media multitaskers performed worse on task-switching tests — they were more easily derailed by irrelevant information and had a harder time filtering distractions. Doing it more didn't make them faster; it made them leakier.

It costs most on the work you bill for

Switching is cheapest on shallow, familiar tasks and most expensive on complex, unfamiliar ones — the analysis, the design, the writing, the client problem-solving. In other words, it taxes exactly the deep work your clients actually pay a premium for.

You don't feel the 40%. You feel vaguely busy, mildly behind, and unsure where the day went. That's what the switching tax feels like from the inside.

How to protect focus (and billable time)

1. Single-task the hard work. Give complex, billable work one uninterrupted block. Batch the shallow stuff (email, approvals, quick replies) into separate windows instead of threading it through everything.
2. Kill the switch triggers. Most multitasking is involuntary — a notification pulls you out. Mute non-urgent alerts during focus blocks so the choice to switch is yours, not the app's.
3. Shrink the tool loop. Every extra app a task touches is another place to switch to. The fewer tools a single job requires, the fewer forced context switches per day.
4. Keep the conversation next to the work. Jumping from doing to discussing in a separate chat app is one of the most common switches. Linking discussion to the task removes it.
5. Make tracking a byproduct, not a task. If capturing time and status happens where the work already lives, you don't switch to a timesheet — and you stop losing the hours you forget to log.

Where TRCR fits

No tool turns you into a supertasker — that's biology, and the 2.5% keep it to themselves. What software can do is remove reasons to switch. TRCR keeps time tracking, projects and tasks, team chat, and invoicing in one real-time workspace, so the work, the plan, the conversation, and the bill don't live in four apps you bounce between. Fewer switches means less of the 40% tax — and more of the day spent on the billable work instead of the seams between tools. It's the same fragmentation problem behind the ~1,200 daily app switches the average worker makes.

Frequently asked questions

Sources

Figures are drawn from published industry research; treat them as directional and benchmark against your own numbers.

1. Supertaskers: Profiles in extraordinary multitasking ability — Psychonomic Bulletin & Review (Watson & Strayer, University of Utah)
2. Multitasking: Switching costs — American Psychological Association
3. Cognitive control in media multitaskers — PNAS (Ophir, Nass & Wagner, Stanford University)