Screen-time and kids: why age-based guidelines matter 

Screen time is one of the most searched parenting topics today and for good reason. Many parents are noticing changes in attention in kids, behaviour, sleep, and emotional regulation and wondering what role screens play.

Screen time recommendations by age

Current evidence-based guidelines recommend:

• 0–24 months: No screen time (except occasional video chatting with family)
• 2–5 years: Up to 1 hour per day of high-quality content
• 5–17 years: Up to 2 hours per day of recreational screen time

Yet despite these guidelines, research shows that only:

• 17–23% of preschoolers and
• 15% of children aged 5–12 years

actually meet recommended screen time limits.

Why screen-time guidelines exist

Young brains don’t just need less stimulation, they need practice.

Practice with:

• Boredom
• Shifting attention, waiting
• Emotional regulation
• “Serve and return” interactions (back-and-forth communication with caregivers)

These experiences are essential for building executive function skills (attention, impulse control, planning, and emotional regulation).

Excessive passive screen time  (such as watching videos or TV) reduces opportunities for kids to practise these foundational skills.

Passive vs interactive screen time: not all screens are equal

Passive screen time (watching TV or videos without interaction):

• Limits communication and language exposure
• Reduces opportunities for imaginative play
• Displaces movement, social interaction, and problem-solving opportunities
• Is associated with differences in attention in kids and emotional regulation

Interactive screen time, on the other hand, looks different.

When a caregiver:

• Talks about what’s on the screen
• Asks questions
• Labels and discusses emotions, objects, or actions
• Connects screen content to real-life experiences

Screen use can support some aspects of child development, particularly language exposure and shared attention when screen time becomes interactive with a caregiver as this provides moments for social connection, communication and joint attention. 

Screen time and child development under 5 years

Critically, children under 12 months who watch more than 2 hours of TV per day have been found to have 6 times higher rates of language delay than peers who watch less than 1 hour per day. The risk of language delay appears proportional to hours of screen exposure and has also been linked to:

• Executive function differences
• Cognition
• Emotional stability
• Self-control

In children under 5 years, evidence shows excessive screen time is associated with:

• Higher risk of unhealthy weight gain
• Differences in motor development
• Impacts on cognitive development
• Reduced social skills
• Differences in psychological wellbeing
• Emotional regulation difficulties that can affect family functioning

Screen time and development in kids aged 5–17 years

In older children and adolescents, screen time is associated with differences in:

• Weight and diet quality
• Behaviour
• Anxiety levels
• Hyperactivity
• Attention 
• Self-esteem

This doesn’t mean screens are inherently harmful but it does mean balance matters, especially when screen use replaces movement, sleep, or connection.

Screen time guidelines go hand-in-hand with movement guidelines

Screen time recommendations are designed to work alongside physical activity guidelines, because movement is essential for brain development.

Movement guidelines by age

• Infants:
  Should not be restrained (e.g. stroller, high chair) for more than 1 hour at a time
• Toddlers:
  Need at least 3 hours of physical activity per day, including energetic play such as:
• Running
• Jumping
• Climbing
• Dancing
• Obstacle courses
• Preschoolers:
  Also need 3 hours of movement per day, with at least 1 hour of energetic play, spread throughout the day
• Children and adolescents (5–17 years):
  Should engage in 60 minutes of moderate to vigorous activity daily that raises their heart rate. Activities are best done with friends, family, and community for social and emotional benefits. Time spent sitting or lying down in front of screens should be limited

Movement supports attention in kids, emotional regulation, learning, and overall health.

Screen time and autistic children: a nuanced picture

Research suggests the relationship between screen time and development may differ for autistic children. A 2021 study found:

• No differences in sociability, cognition, or health between high and low TV users
• Autistic children who were high TV users (>2 hours/day) developed expressive language (talking skills) 1.3 times faster than low TV users, though this was not statistically significant at 36 months
• Low TV users showed significantly greater development of receptive language (understanding language)

What this means for screen time for autistic children 

Some autistic children may appear to develop talking skills faster with higher screen exposure for a period of time however, excessive screen use may limit opportunities to build understanding of language, complex communication, and deeper comprehension skills that are essential for long-term learning and connection.

Modelling healthy screen time: habits matter

One of the most powerful and often overlooked influences on screen time kids experience is adult behaviour. Children learn how to use screens by watching the adults around them. When caregivers frequently check phones or devices, children receive a strong (and unintentional) message about attention, availability, and regulation.

Research shows frequent caregiver device use can:

• Reduce “serve and return” interactions
• Interrupt shared play and conversation
• Decrease language-rich moments
• Model divided attention as the norm

Even small, repeated interruptions (sometimes referred to as technoference) can affect child development, particularly in early childhood when brains are wiring around connection.

What healthy screen modelling looks like

Healthy modelling does not mean eliminating screens. It means using them intentionally.

Helpful strategies include:

• Putting phones away during meals, play, and routines
• Narrating screen use (“I’m checking the weather, then I’ll put my phone away”)
• Creating predictable screen-free times
• Prioritising face-to-face interaction when children are present
• Demonstrating balance between screens, movement, and rest

When children see adults pause screens, tolerate boredom, and stay engaged with the world around them, they are more likely to develop these same skills.

This modelling directly supports attention in kids and reinforces the purpose of age-based screen time guidelines.

The big picture: why screen time guidelines matter

Screen time guidelines exist to protect developmental opportunity.

They work in parallel with:

• Movement guidelines
• Sleep needs
• Nutrition
• Relationship-based learning

   

  Every child’s brain develops in its own time and in its own way, and when we support that development with connection, movement, and mindful screen use, we create the conditions for children to thrive.

  
  

  Dr Claire

  Paediatrician and Founder, Base Kids Health