Does multitasking make people less productive?
The evidence mostly shows that dividing attention hurts learning and wellbeing, though the effect on general cognitive ability is weak.
Covers: Covers research on task switching, divided attention, and productivity outcomes in work and everyday settings. Does not cover clinical attention disorders or advice on specific productivity tools.
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The short answer
Evidence-backed AI-prepared starting mapThe evidence points mostly one way: dividing attention across tasks tends to cost performance. Multitasking wastes time through context switching and raises error rates from insufficient attention, and people who multitask while learning are worse at learning new information than those who do not divide attention. Self-perception is a poor guide here — feeling good at multitasking or believing you get more done is frequently inaccurate. In a study of 214 young adults, media multitasking showed no significant overall association with combined cognitive outcomes, but higher media multitasking was linked to lower performance on a convergent-thinking task, with a small effect size. In the workplace, multitasking was negatively associated with wellbeing, with job stress carrying 35.73% of that relationship, and job autonomy weakened the multitasking–stress link. Among nursing students, media multitasking was negatively associated with online learning engagement, partly by reducing academic self-efficacy, and stronger attention control attenuated the harm.1234
- Evidence 19
- Interpretation 2
In brief
Dividing attention costs time through context switching and raises errors from insufficient attention, and people who multitask while learning learn less.1
Evidence-backedSelf-perception is unreliable: feeling good at multitasking or believing it makes you more productive is frequently inaccurate.1
Evidence-backedIn 214 young adults, media multitasking showed no significant overall link to combined cognitive outcomes, with only a small association with lower convergent-thinking performance.2
Evidence-backedAt work, multitasking was negatively associated with wellbeing, with job stress carrying 35.73% of that relationship, and job autonomy weakened the multitasking–stress link.3
Evidence-backed
At a glance
The picture in numbers
Live · updated just now
214 young adults
35.7%
36 in every 100
354 employees
The evidence behind it
6 sources- Reviews of many studies1
- Other studies and data4
- Background1
Published in 2025 and 2026
| Source | Kind | Year |
|---|---|---|
| Science Is About Thinking: How Can We Protect Thinking Time in a Distracted Digital World? | Other studies and data | 2026 |
| Media Multitasking and Cognitive Abilities: A Multi-Domain Assessment of Attention, Working Memory, Convergent Associative Thinking, and Fluid Reasoning. | Other studies and data | 2026 |
| Multitasking and workplace wellbeing: the roles of job stress and job autonomy. | Other studies and data | 2025 |
| Digital distraction and adolescent development: a narrative review of smartphone use, cognitive effects, and policy interventions. | Reviews of many studies | 2026 |
| The impact of media multitasking on online learning engagement among nursing students: the mediating role of academic self-efficacy and the moderating role of attention control. | Other studies and data | 2026 |
| Human multitasking (Wikipedia) | Background | Unknown |
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What it means for you
Which fits you?
Pick the situation closest to yours. Each answer says what it rests on.
If you are studying or learning new material
avoid dividing attention across other tasks; people who multitask while learning are worse at learning new information than those who do not.1
Evidence-backedIf you are a student in an online course
media multitasking is likely to reduce your engagement, partly by lowering your academic self-efficacy; strengthening attention regulation may help offset this.4
Evidence-backedIf your job involves frequent multitasking
expect higher job stress and lower wellbeing; having more autonomy over how you work weakens the link between multitasking and stress.3
Evidence-backedIf you believe you are good at multitasking
treat that belief with caution; self-perception of multitasking ability and of getting more done is frequently inaccurate.1
Evidence-backedIf you are an adolescent or the parent of one
excessive smartphone use is associated with modest but consistent links to sleep disruption and reduced attentional capacity, though effects vary by activity type, timing, and individual vulnerability.5
Evidence-backedIf you want to protect demanding cognitive work
treat uninterrupted thinking time as a distinct resource worth defending; repeated task-irrelevant digital interruptions are associated with attentional fragmentation that reinforces itself.6
Evidence-backedIf you are deciding whether to hand a thinking task to an AI tool
note that voluntary cognitive offloading is described as reducing deep engagement independently of attentional distraction, so it carries a different kind of cost than interruption.6
Evidence-backedThe full story · 3 chapters
01
What the evidence shows about divided attention and output
AI summary:Multitasking costs time and accuracy, self-assessment is unreliable, and harms are clearest in learning settings.
Evidence-backed: Multitasking is commonly defined as splitting attention across more than one task at once, such as talking on the phone while driving. The costs show up in two main ways: time lost to context switching — for example, working out which step comes next after a switch — and errors caused by insufficient attention. Some people are proficient at the tasks involved and can shift attention rapidly, but self-assessment is unreliable: believing you are good at multitasking, or that you get more done that way, is frequently inaccurate. Multitasking is also described as mentally and physically stressful for everyone, to the point that it is used in laboratory experiments as a way to study stressful environments.1
Evidence-backed: In a study of 214 healthy young adults aged 18–30, media multitasking was measured by questionnaire alongside tests of attention, working memory, convergent associative thinking, and fluid reasoning. There was no significant overall association between media multitasking and the combined cognitive outcomes. At the individual-test level, higher media multitasking scores went with lower performance on the Remote Associates Task, a convergent-thinking measure, though the effect size was small.2
Evidence-backed: In learning settings the pattern is more clearly negative. Research suggests that people who multitask while learning are worse at learning new information than those whose attention is not divided. Among nursing students, media multitasking was negatively associated with online learning engagement, and academic self-efficacy partially mediated that relationship — that is, multitasking appears to impair engagement partly by reducing students' confidence in their academic ability. Attention control moderated both links, with stronger attention control weakening the negative effects of media multitasking.14
Evidence-backed: A review of adolescent smartphone use describes excessive use as associated with modest but consistent relationships with sleep disruption, reduced attentional capacity, and increased internalizing symptoms among some adolescents. These effects are heterogeneous and appear moderated by the type of digital activity, the timing of use, and individual vulnerability. Evidence on school-based smartphone bans points to improvements in classroom attention and engagement, while broader effects on mental health and long-term digital habits remain unclear, and adolescents themselves hold mixed views about bans.5
How often do you multitask while working or studying?
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02
Workplace wellbeing, stress, and the role of autonomy
AI summary:At work, multitasking was tied to lower wellbeing through job stress, with autonomy weakening that link.
Evidence-backed: Among 354 information-technology employees in China, multitasking was negatively associated with workplace wellbeing, and job stress partially mediated that relationship, accounting for 35.73% of the effect. Job autonomy moderated the multitasking–stress link, weakening the adverse relationship: where people had more control over their work, multitasking was less strongly tied to stress. The authors frame this in job demands–resources and conservation-of-resources terms and encourage organizations to reduce job stressors and increase autonomy to support wellbeing.3
Evidence-backed: A separate line of work treats protected thinking time as a distinct resource. Deep thinking is described as a sustained, integrative process supported by coordinated executive control and default mode network activity, while protected thinking time is the uninterrupted interval in which that process can happen. Repeated engagement with task-irrelevant digital stimuli is associated with cortico-striatal strengthening and prefrontal-parietal under-consolidation — a plasticity paradox in which attentional fragmentation becomes self-reinforcing. Generative AI is flagged as a qualitatively different risk through voluntary cognitive offloading, which reduces deep engagement independently of distraction.6
03
How to read these findings
AI summary:Harms are clearest for learning and demanding work, and attention control and autonomy buffer the costs.
Interpretation: The clearest harms appear where attention is divided during learning or cognitively demanding work, and where multitasking is chronic rather than occasional. The picture is weaker for general cognitive ability: the young-adult study found no overall association with combined cognitive outcomes, and only a small link to one convergent-thinking task. The workplace evidence is about wellbeing and stress rather than output, so it speaks to how multitasking feels and what it costs people, not directly to how much they produce.234
Interpretation: Two moderators recur across the sources: attention control and autonomy. Stronger attention control attenuated the negative effects of media multitasking on self-efficacy and learning engagement in nursing students, and job autonomy weakened the multitasking–stress relationship at work. This suggests the cost of multitasking is not fixed but depends on the person's regulatory capacity and how much control they have over their conditions.43
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- 1Human multitasking (Wikipedia)WikipediaPublished Oct 2, 2026Checked Oct 4, 2026
“Human multitasking is the concept that one can split their attention on more than one task or activity at the same time, such as speaking on the phone while driving a car. Multitasking can result in time wasted due to human context switching (e.g., determining which step is next in the task just switched to) and becoming prone to errors due to insufficient attention. Some people may be proficient at the tasks in question, able to rapidly shift attention between the tasks, and thus able to perform the tasks well. However, self-perception of being good at multitasking or getting more done while multitasking is frequently inaccurate. Multitasking is mentally and physically stressful for everyone, to the point that multitasking is used in laboratory experiments to study stressful environments. Research suggests that people who are multitasking in a learning environment are worse at learning new information compared to those who do not have their attention divided among different tasks.”
- 2Media Multitasking and Cognitive Abilities: A Multi-Domain Assessment of Attention, Working Memory, Convergent Associative Thinking, and Fluid Reasoning.Journal of Intelligence (Caprì)Published Aug 1, 2026Checked Oct 4, 2026
“The main aim was to deepen the understanding of the associations of media multitasking with these core domains of human cognition. A total of 214 healthy young adults (18-30 years) completed the Short Media Multitasking Questionnaire, Raven's Progressive Matrices, the Digit Span Test, the Trail-Making Test, and the Remote Associates Task. Multivariate general linear models and subsequent regression analyses were performed while controlling for age and gender. The results did not reveal a significant overall association between media multitasking and the combined cognitive outcomes. At the univariate level, higher media multitasking scores were associated with lower performance on the Remote Associates Task, although the observed effect size was small. Given the cross-sectional design and reliance on self-reported media multitasking, longitudinal studies employing objective measures of media multitasking use are needed to clarify the robustness and directionality of these associations.”
- 3Multitasking and workplace wellbeing: the roles of job stress and job autonomy.Frontiers in psychology (Wei et al.)Published Aug 18, 2025Checked Oct 4, 2026
“Grounded in the Job Demands-Resources (JD-R) and Conservation of Resources (COR) theories, this research proposed that multitasking negatively associates workplace wellbeing by increasing job stress, and that job autonomy buffers this relationship between multitasking and job stress. Data were collected from 354 employees in the information technology industry in China, with a response rate of 98.33%, ensuring sample adequacy. AMOS 26.0 and SPSS 29.0 were employed in this study to test the hypothesized relationships. Results indicated that job stress partially mediates the relationship between multitasking and workplace wellbeing (VAF = 35.73%). Job autonomy moderates the relationship between multitasking and job stress, weakening the adverse relationship. These findings contribute to the literature by clarifying the dual roles of job stress and job autonomy. Practically, organizations are encouraged to reduce job stressors and enhance autonomy to support employee wellbeing. Future research should explore industry-specific differences and longitudinal dynamics to deepen understanding of multitasking's impact over time.”
- 4The impact of media multitasking on online learning engagement among nursing students: the mediating role of academic self-efficacy and the moderating role of attention control.BMC nursing (Shida et al.)Published Feb 24, 2026Checked Oct 4, 2026
“Media multitasking was negatively associated with online learning engagement. Academic self-efficacy partially mediated this relationship, with a significant indirect effect. Attention control moderated both the relationship between media multitasking and academic self-efficacy, and the relationship between media multitasking and learning engagement, such that stronger attention control attenuated the negative effects of media multitasking. Media multitasking impairs nursing students’ online learning engagement partly by reducing their academic self-efficacy. Stronger attention-control abilities mitigate these detrimental effects. Interventions aimed at enhancing academic self-efficacy and strengthening attention regulation may help promote learning engagement in online environments. CLINICAL TRIAL NUMBER: Not applicable.”
- 5Digital distraction and adolescent development: a narrative review of smartphone use, cognitive effects, and policy interventions.Frontiers in psychology (Colakoglu & van)Published Sep 8, 2026Checked Oct 4, 2026
“Research across observational studies, experimental work, and systematic reviews suggests that excessive smartphone use is associated with modest but consistent relationships with sleep disruption, reduced attentional capacity, and increased internalizing symptoms among some adolescents. However, these effects are heterogeneous and appear to be moderated by factors including type of digital activity, timing of use, and individual vulnerability. Evidence examining the effects of school-based smartphone bans indicates improvements in classroom attention and engagement, although broader impacts on mental health and long-term digital habits remain unclear. Furthermore, adolescent views on smart phone bans are mixed, with students recognizing that there are positive and negative effects of both smartphones and bans. Together, these findings suggest that smartphone use represents a complex developmental exposure rather than a uniformly harmful or beneficial influence. Future research should examine how structured phone-free environments, including school and extracurricular settings, influence adolescents' social interaction, digital behavior, and well-being over time.”
- 6Science Is About Thinking: How Can We Protect Thinking Time in a Distracted Digital World?Brain sciences (Dhahbi et al.)Published Jun 27, 2026Checked Oct 4, 2026
“e cognitive effects of digital interruption in professional and/or research settings were included.Results and interpretationDeep thinking and protected thinking time are treated as distinct constructs: the former as a sustained, integrative cognitive process supported by coordinated executive control and default mode network activity, the latter as uninterrupted temporal intervals within which that process can occur. Repeated engagement with task-irrelevant digital stimuli is associated with cortico-striatal strengthening and prefrontal-parietal under-consolidation, producing a plasticity paradox in which attentional fragmentation becomes self-reinforcing. The emergence of generative artificial intelligence introduces a qualitatively distinct threat through voluntary cognitive offloading, which reduces deep engagement independently of attentional distraction.ConclusionsEvidence-based strategies spanning individual, team, organizational, technological, and assessment levels are available to preserve protected thinking time. Direct evidence linking these intervals to specific research-impact outcomes remains limited, and institutional interventions should be prospectively evaluated.”
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Published 1 time since Oct 4, 2026.
- Version 2Oct 4, 2026Live now
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Open questions
Do people who multitask more become less productive, or do people who are already struggling with attention and workload multitask more? Most of the evidence is cross-sectional.
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How does multitasking affect concrete output — completed work, error rates, quality — rather than self-reported wellbeing, engagement, or test scores?
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What happens over years, not weeks? Longitudinal studies with objective measures of multitasking are still needed.
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Does protecting uninterrupted thinking time actually improve research or work outcomes? Direct evidence linking protected intervals to specific impact outcomes remains limited.
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How much do industry, role, age, and task type change the size of the multitasking penalty?
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