More than 69% of adults and 81% of teens use social media daily, with more than 90% of teens using it for more than four hours a day. As social media becomes increasingly integrated into everyday life, users are exposed to continuous streams of posts, videos, notifications, and other information competing for their attention. This constant flow of digital stimuli may increase our mental workload, making it harder for the brain to process information efficiently, filter distractions, and maintain focus on a single task.
Does Social Media Impact Attention Span?
Social media exposes users to a constant stream of rapidly changing content, notifications, and prompts. Every buzz, preview, sound, and glowing notification competes for the brain’s attention spotlight. This continuous opportunity to switch between information can encourage frequent attention shifts. By training our brains to expect constant stimulation, social media has reduced tolerance for slower activities like lectures and reading—making these tasks feel much harder. Researchers are seeing media use impact both short-term effects on task performance as well as long-term effects on cognitive and focus abilities.
Moreover, research suggests that specifically media multitasking and excessive screen time are negatively affecting attention in children, adolescents, and adults.
Media Multitasking Is Affecting Attention
A study examined digital media use among 118 children ages 8 to 12 and found that how children use digital media may matter more than the total amount of time they spend on screens. Researchers found that media multitasking (i.e., simultaneously engaging with multiple digital media, such as scrolling through social media while watching a video, listening to music, or studying) was associated with more attention and behavioral problems, greater psychological distress, poorer sleep, and lower socioemotional functioning. This behavior can divide attention and increase cognitive demands, making it more difficult to concentrate, retain information, and complete tasks effectively. Frequent media multitasking may also encourage people to rapidly shift their attention rather than focus deeply on one activity.
Screen Time Is Affecting Attention Span
When examining the brains of young children exposed to more screen time at the age of 3 to 5, researchers found brain structure changes. These changes include decreased organization of the connections between the attention system, visual processing regions, and language processing regions that are extremely crucial for language processing and academic skills. In addition to negatively impacting attention spans, excessive (particularly unstructured or recreational) screen time can affect children’s developing brains, which undergo important processes such as myelination and neural pathway formation. In short, excessive screen use and media multitasking have been associated with poorer executive functioning, academic performance, and attention.
Media Multitasking and Excessive Screen Time Impacting Attention
A review examined 23 studies involving more than 42,000 adolescents and young adults to understand how social media affects cognitive development. The review found that media multitasking and using multiple platforms at once were also associated with greater distraction and reduced selective attention. It also found that excessive social media use was generally associated with poorer attention, reduced working memory, impaired decision-making and executive functioning, particularly among young people experiencing problematic or addictive use.
Context and Quality of Screen Use Matters
The context and quality of screen use matter, with age-appropriate educational content, co-viewing with caregivers, and balanced use potentially offering benefits. Hence, there are potential cognitive benefits from purposeful and educational social media use—including improved language skills, verbal memory, and focused learning when people actively engage with educational content rather than scrolling passively.
It is therefore important to highlight that the effects of social media depend on factors, such as the platform itself, intensity and purpose of use, and an individual’s emotional state.
How Social Media Increases Mental Workload and Affects Attention
The relationship between social media and attention span can also be considered through the lens of mental workload. Mental workload refers to the amount of cognitive effort and limited mental resources a person uses while completing a task. It determines how effectively the brain allocates its limited cognitive resources to process tasks over time.
By overloading the working memory with a constant, fast-paced stream of information and notifications, social media can increase mental workload, making it more difficult to maintain attention, process information effectively, and focus on a single task for an extended period. When the amount of information exceeds the cognitive resources available, individuals may experience mental fatigue, reduced concentration, and difficulty sustaining attention on a single task. Over time, frequent interruptions and digital multitasking may make it harder to shift back to tasks that require prolonged or focused attention.
ISO 10075 Standards for Managing Mental Workload
Managing mental workload, especially for working adults, is critical because unmanaged cognitive strain reduces focus, increases errors, and leads directly to burnout and high staff turnover. The ISO 10075 series guide the design of work systems, tasks, tools, and environments to assure that mental and cognitive demands align with human capacities—preventing both harmful mental overload and mental underload.
- Mental overload: the information or tasks one faces exceed the brain’s capacity to process them
- Mental underload: a task lacks enough stimulation or challenge to keep the brain engaged.
ISO 10075-1:2017 defines concepts related to mental stress and mental strain; ISO 10075-2:2024 provides design principles intended to help prevent mental overload and support well-being, performance, and effectiveness; and ISO 10075-3:2004 addresses methods for measuring and assessing mental workload.
ISO 10075-1:2017, Ergonomic principles related to mental workload — Part 1: General issues and concepts, terms and definitions, ISO 10075-2:2024, Ergonomic principles related to mental workload — Part 2: Design principles, and ISO 10075-3:2004, Ergonomic principles related to mental workload – Part 3: Principles and requirements concerning methods for measuring and assessing mental workload are available on the ANSI Webstore, the best place to buy ISO standards.
These international standards are also available in the following Standards Package, ISO 10075 – Mental Workload Package.