Studies Show A Link Between High Screen Time And Neural Impairments: Is The Issue The Screen Itself, Or What Screen Time Replaces?

A user on X, Camus (new_start2024) tweeted about something very concerning, the other day. He brought up a 2019/2020 study that relates to screen time use and children’s brain development.

He tweeted:

“This MRI study on young kids just exposed something terrifying:

“They scanned the brains of 60 children aged 3–5 – including 5-year-old Rose – and found interactive screen time is causing measurable loss of white matter in their developing brains. Even just 2 hours a day is linked to impaired neural connectivity, language, and literacy development.

“Professor Mike Nagel (neuroscientist and father) said his first reaction was simply: “Wow… I was not anticipating seeing anything like that.”

“We’re physically changing children’s brains before they even start school – and the damage is visible on scans.

“This one actually unsettled me. I’ve always suspected too much screen time was bad, but seeing real white matter loss in toddlers hits different.

“Parents of little ones — has this kind of research changed how much screen time you allow?”

The tweet has over 10 million news now, and many conversations have started to take place because of it.
 

What Did The Study Find?

 
The researchers, John S. Hutton, MS, MD, as well as Jonathan Dudley, PhD, and Tzipi Horowitz Kraus, PhD, published their findings in JAMA Pediatrics after studying 47 children aged 3-5. The researchers used MRI scans as well as language and early reading assessments to compare brain structure and screen use measured through a ScreenQ survey that parents had to complete.

The study reports, “increased use of screen based media in the context of the AAP guidelines was associated with lower microstructural integrity of brain white matter tracts that support language, executive functions, and emergent literacy skills, controlling for child age and household income.”

So, white matter tracts act like communication lines in the brain and the scans show that there’s weaker organisation and myelination (a nerve fibre) in children with higher exposure to screens.

These same children also had lower scores in things like expressive vocabulary, phonological processing and their ability to read, based on some standardised assessments used in the study.

The numbers came from a controlled analysis where age and household income were accounted for which strengthens the pattern seen between screen use and both brain structure and behaviour.

 

Is Screen Time The Cause Or A Sign Of A Deeper Issue?

 

The researchers did not claim cause and effect, and they were careful about that distinction throughout the paper. The study speaks of associations, which leaves room for other influences that could possibly influence the outcome seen in the scans.

The paper says, “screen use was also associated with lower scores on corresponding behavioral measures, controlling for age.”

Daily routines may offer part of the answer, since screen time often replaces activities that build language and attention skills through direct interaction.

Separate from the study, Erin Morris Miller, Independent Consultant at Erin Morris Miller, LLC, who also has a PhD in educational psychology from the University of Virginia, says, “The issue is not the screen time itself, it is the loss of human interaction.

“It is the solitude that is the negative factor. Babies learn language from person-to-person human interaction. There is more to communication than just sound. Babies learn about the meaning of language from the context of their environment. Spending time together talking while using technology, such as television and computer screens, is better than the child being placed in front of a screen alone.”

 

What Do Experts Think?

 

More experts answer the question: Is the screen itself the issue, or is it what screen time is replacing?

 

Our Experts:

 

• Norrine Russell, Ph.D., Russell Coaching for Students
• Hannah Hagon, Unplugged Tot
• Rob Price, CEO, Youth Enrichment Brands
• Elizabeth Fraley, CEO And Founder, Kinder Ready
• Jordan Kuchta, Pediatric Speech Language Pathologist
• Emily Burgess, Director of Early Years, Family First Nurseries
• Lisa George, Founder/CEO, Talk Tribeca
• Dr Karl Sebire, University of Melbourne, PhD (educational psychology), Director, ADHD Australia
• Seymour Segnit, Founder & CEO, Magfast

 

Norrine Russell, Ph.D., Russell Coaching for Students

 

 

“While the research on brain development and screen time is important, the bigger question isn’t just the screen itself – it’s what screen time is replacing. Young children develop language, emotional regulation, and social skills through back-and-forth human interaction, unstructured play, and even moments of boredom. When screens displace those experiences, we see the impact.

For older students, including those with ADHD, we see a similar pattern – difficulty with focus, impulse control, and delayed gratification can be amplified in highly stimulating digital environments. The issue isn’t that technology is inherently harmful, but that it often outcompetes the kinds of experiences the developing brain needs most.

That’s where platforms also have a role to play. Designing with attention, development, and healthy limits in mind – rather than maximising engagement – can make a meaningful difference, especially for younger users who don’t yet have the executive functioning skills to self-regulate their use.”

 

Hannah Hagon, Unplugged Tots

 

 

“Our children are growing up with screens, technology and digital distraction impacting their futures. When used appropriately, technology can be the greatest enabler for change and progress, but when used to constantly entertain and detract from the wonders of conversation, nature and play, we have a problem. By filling the boredom void with constant entertainment, we’re not allowing our children to use their imagination, to encounter and solve problems, to collaborate, listen and communicate.

“Screens themselves aren’t necessarily an issue – not all screen use is the same and when we can utilise the tool (ie screens) to facilitate learning about the world, learning how to solve logic problems, talking to family members we’re supplementing an enriching educational experience. What is giving cause for concern is the lack of ‘safety by design’ in these applications. The persuasive design features like infinite scroll and autoplay are designed to keep the consumers consuming the content.

“This is having an impact on adolescents whose capacity to think critically and self regulate to stop consuming is limited due to their under-developed pre-frontal coretex (usually matures in mid 20’s). Screen use of more than 1.5 hours per day for 2 year olds, as an example, are impacting childhood development by displacing the ‘proximal processes;’ the daily activity of conversations, daily life, the face to face interactions that support conversation, language and social skills.

“I think screen time should be part of the blended play approach depending on the age, energy levels (of caregivers and child) and dynamics within the home. Educational content on screens is better for stretching the development and growth of the child but sometimes watching content together, snuggled up and talking about scenes seen on the TV can be just as educationally enriching. Being intentional with the screen-use we’re offering our children as part of a holistic home play and recreation suite can complement the skills that our children learn through screen-free play.

“It is worth noting here that in the research there are also a significant statistics around ‘technoference’; adult use of screens around children and the impact that is having on children and childhood development. We MUST be mindful of the pressures modern parents face, isolation, mental health and well being, financial strain, work pressures. For some, an escape into another world is the respite they need to maintain the status quo to be the best version of themselves for their family.

“We must not judge parents living in these highly pressured times, the digital noise can be overwhelming and the applications and systems are designed to be addictive. What we need to do, collectively is support one another and provide guidance to all in this pixel heavy world and remind people that there is a world outside of the screen. Through screen free activities, Unplugged Tots teaches concepts such as critical thinking, problem solving, logical reasoning and crucial computational thinking skills essential for this tech led world. Children move, stick, craft, cook, paint, sing, dance and bake to learn these concepts.”

 

Rob Price, CEO, Youth Enrichment Brands

 

 

“Is the issue the screen itself, or what screen time replaces (human interaction, play, boredom)?

“The screen is the symptom. The deeper problem is displacement. The quiet, cumulative replacement of experiences that build character with experiences that merely consume attention. When a child spends two hours on a device, it’s not just two hours of passive content. It’s two hours that didn’t include a disagreement resolved face-to-face, a failure recovered from in front of other people, or the kind of overlapping social feedback that only comes from being in a room with other human beings.

“That is developmental infrastructure that went unbuilt. The MRI data is alarming, but it’s confirming what we’re already seeing in our programs: children who lack sustained real-world peer experience are arriving with measurably less resilience, less social calibration, and less confidence.”

“What responsibility do platforms have in shaping healthy usage for young children?

“Platforms have been allowed to treat children as users rather than as developing human beings, and that has to change. The burden of managing children’s digital exposure has fallen almost entirely on parents who were never resourced to compete with products engineered by teams of behavioral scientists to maximise engagement. We support age verification for social media access, with 16 as the minimum, and we believe platforms bear legal and ethical responsibility for the environments they create for children. Shifting that accountability from parents to platforms is the only approach that actually scales.”
 

 

Elizabeth Fraley, CEO And Founder, Kinder Ready

 

 

“Screen time is showing developmental declines in neural connectivity and learning development in early learners. Providing children with stimuli that match their potential and current strengths is developmentally meaningful. With that said, finding a realistic balance of live and screen time is essential.

“Usually content that is developmentally meaningful spans across several multiple areas of development including language, cognition, and social readiness. Screen time can be engaging for a few minutes, but it needs to be limited to eliminate the potential for screen use to impact development. Research shows that daily screen time must be limited (well under 2 hours) to avoid developmental setbacks.

“Families and online platforms need to evaluate what is best for children based on their age. There does not always need to be a measurable practicality to screen time but parents and caregivers should balance live interaction with screen time, knowing that live interaction is the most impactful and meaningful for a child’s development.

“Parents and online platforms can evaluate digital content by ensuring that it is timed to avoid overuse that strains early learning development. Child-led or emergent curriculum often translates to live experiences or screen time where the child can dictate what is important to them, regardless, screen time needs to be limited to allow proper development.

“Children respond better to organic open ended play and exploration than to rote screen activities. Screen experiences are not as organic which limits creativity and the likelihood for the highest most optimal learning and social experiences.
Children need tactile experiences, which a screen prohibits.

“Children respond well to low stimulation screen time for small time increments. Low-stimulation screen time might engage a child but won’t provide as much meaningful academic learning as personalised one-on-one interactions.

“Meaningful learning comes from autonomous learning, play, repetition, and imagination alike. Students need opportunities to learn through independence, and children learn so much through play, especially in early childhood. For literacy and math skills, repetition is a key ingredient for full learning which requires live human interaction rather than screen-based instruction.

“Utilisation of Imagination during screen time, is limited. Children discover learning at a deeper level through non-technological experiences and spontaneous, organic human interactions. “These different learning modalities affect children differently based on their age, learning preferences, personality, and prior exposure to learning and familial experiences that a screen cannot replace. In fact, Children need boredom to spark their creativity and sharpen their thought process.

“Education is education. But if the screen time won’t ignite the child’s senses and interests and it is not going to be the most productive experience for the child or family.

“When children are given stimuli that matches their potential and current potential and strengths it can be seen as developmentally meaningful to their development. Usually content that is developmentally meaningful spans across several multiple areas of development including language, cognition, and social readiness. Screen time in moderation can provide fun, low stimulation, and can offer children choices between various themes and interest areas during screen time. There does not always need to be a measurable practicality to screen time but it cannot replace human interaction and must be limited daily to avoid developmental setbacks.”

 

Jordan Kuchta, Pediatric Speech Language Pathologist

 

 

“I believe that both the presence of screens and the type of media being consumed play a significant role in a child’s overall development. Within my scope of speech-language pathology, language development and social skills can be particularly affected. While it is challenging to raise a child without any screen exposure in today’s society, I also frequently observe the extreme opposite: prolonged use of tablets and television throughout the day.

“There are certainly high-quality programs and content that I recommend to parents looking for a language enriching show (such as Sesame Street, Bluey, and Ms. Rachel). However, it is most beneficial when screen time is a shared experience between the child and caregiver. Watching together allows parents to actively support language development by engaging the child with questions and comments, such as, “What do you think will happen next?” or “Look at that interesting car!”

“Continuing these conversations after the program ends can further reinforce learning in addition to supporting early social skills. Screen use becomes less harmful when it shifts from a passive activity to an interactive one.

“With the rapid advancement of technology comes increased accessibility. Today’s children are growing up immersed in digital environments and can easily navigate platforms like YouTube, Spotify, and other applications very easily. For this reason, I encourage parents and caregivers to be intentional and attentive to the content their children are exposed to, particularly with regard to suggested videos and advertisements.

“I also remind parents to reflect on their own relationship with technology. Many of us rely heavily on our smartphones and may find ourselves spending extended periods scrolling or engaging with social media. Recognising our own habits can provide valuable insight into how screen exposure might impact a young child’s developing brain.”

 

Emily Burgess, Director of Early Years, Family First Nurseries

 

 

“Why healthy screen time matters for children:

“Screens are a normal part of modern life, but young children still learn best through hands-on play, movement, and social interaction. Guidance suggests limiting screen time for under-fives to around 60 minutes per day, and focusing on short, meaningful sessions rather than long periods of passive viewing. When used thoughtfully, screens can support learning; however, they should sit alongside, not replace, real-world experiences.”

“What ‘quality screen time’ actually looks like:

“High-quality content is calm, simple, and designed specifically for early years. Educational apps, story-based programmes, and short videos that encourage thinking, answering questions or naming objects offer more developmental value than fast-paced or overstimulating content. The goal is always to support language, curiosity and connection.”

“The importance of co-viewing, screens as a shared experience:

“Children understand far more when an adult is nearby. Co-viewing, even quietly, helps them make sense of what they’re seeing. Talking about characters, pausing to explain something, or linking the story to real life all deepen learning. Children gain more language, more emotional understanding and more confidence when screens are used alongside an engaged adult.”

“A few gentle principles that can make a meaningful difference:

• Short bursts work best: Use screens in short 10–15-minute sessions, with breaks for play, movement, or fresh air.
• Choose calm, age-appropriate content: Favour programmes or apps designed for early, go for simple and slow-paced shows that are rich in language.
• Watch together whenever possible: Even brief co-viewing helps children ask questions, build vocabulary and understand emotions.
• Protect sleep and routines: Avoid screens in the hour before bedtime to help children wind down and settle more easily.
• Create screen-free zones: Keeping mealtimes, bedtimes and play spaces tech-free supports communication and calmer routines.
• Model the habits you want to see: Children copy adult behaviour. Putting your own phone aside during shared moments teaches healthy habits naturally.

“Understanding when screens may need to be limited:

“If a child becomes irritable when a device is removed, loses interest in play, or shows signs of tiredness after long periods of viewing, these can be cues to reduce screen time. It doesn’t need to be a cause for worry; simply shifting to shorter sessions, calmer content, and more co-viewing can quickly restore balance.”

“When some children may need extra consideration:

“For children with speech delays, sensory sensitivities or specific health needs, screens can be both helpful and overwhelming. In these situations, short, structured sessions and co-viewing become even more important. Simple adjustments — such as choosing calmer, slower-paced content or reducing background noise and brightness — can make screen time feel much more manageable. Parents may find it useful to speak with nursery staff or relevant health professionals if they need tailored guidance, as even small changes can make a significant difference.”

 

Lisa George, Founder/CEO, Talk Tribeca

 

 

“The screen itself isn’t the whole problem, it’s what it replaces. Early brain development happens through the kinds of things you see at a playground; kids going back and forth, talking, figuring things out, just playing. That’s how the brain wires for communication.

“When screen time starts taking the place of that, it’s not just adding something in, it’s taking something away. That’s where we see differences show up in research, from neural connectivity to downstream language and early literacy.

“Platforms can’t ignore their role in this. These products are built to hold attention and they’re doing that in young brains that don’t have the ability to regulate themselves. That matters. There’s a real opportunity, and honestly a responsibility, to design with child development in mind. Tech isn’t going anywhere. It just needs to be used more thoughtfully. Slower pacing, fewer rapid reward cycles, and more features that encourage co-viewing instead of just passive use.”

 

Dr Karl Sebire, University of Melbourne, PhD (educational psychology), Director, ADHD Australia

 

 

“The more useful question is not ‘Are screens problematic?’ but ‘What is the screen displacing?’ For a young child, development depends heavily on conversation, imaginative play, movement, boredom, and responsive human interaction. If screens crowd those out, that is where concern becomes justified.

“Screens may be part of the story, but opportunity cost is likely central. Childhood has finite hours. If more screen time means less sleep, less play, less reading, and fewer conversations, those lost experiences matter.”

 

Seymour Segnit, Founder And CEO, Magfast

 

 

“Is the issue the screen itself, or what screen time replaces?

“It’s not really about the screen time. What should worry you is the holistic system of loud videos, badges, sound effects, and relentless activity that substitutes for slower, necessary inputs such as talking, recreation, napping, and tactile problem-solving. Although MRI studies may reveal a correlation, NOT causation, it presages that prolonged screen use can DISPLACE activities that are critical to acquiring language and literacy skills.”

“Platforms play a role, but remember – they’re just ONE part of the broader ecosystem with parents, educators, and device manufacturers. It is necessary to be transparent about product design and how it is likely to be used by younger audience.. And of course, families can make informed decisions with clear controls, visibility into usage, and age-appropriate options. Ultimately, the goal should be to support intentional use and have prompts in place for controlled usage.”