The evidence is growing, and the answer matters more than you might think for your toddler's emotional world.
Yes, the research does suggest a meaningful link between excessive screen time in the early years and elevated anxiety, emotional dysregulation and stress responses in toddlers, though the relationship is nuanced rather than catastrophic. Guidance from the World Health Organization and the American Academy of Pediatrics points in the same direction: screens are not neutral for very young children, and the quantity, timing and context of use all shape outcomes in ways parents have good reason to understand. This is not about guilt. It is about knowing what is happening inside a small child's developing brain, and what simple changes can make a genuine difference.
The reassuring flip side is equally well-evidenced. When toddlers spend meaningful time in open-ended, hands-on play, particularly with simple physical objects that respond to their own actions, their stress-response systems become better regulated, their attention steadies and their capacity to manage difficult emotions grows. The solution to too much screen time is not anxiety for parents, but play, and the right kind of play is simpler and older than any app.
The toddler brain is not a miniature adult brain. It is a system in extraordinary flux, laying down neural architecture at a pace that will never be repeated. Researchers Patricia Kuhl and Andrew Meltzoff at the University of Washington demonstrated that infants and toddlers learn language and social cues most effectively through contingent, face-to-face interaction: that is, interaction that responds directly to what the child does. Screens, by contrast, offer stimulation that is rapid, unpredictable and entirely non-contingent. A cartoon does not pause because a two-year-old looks confused. It does not slow down when a toddler is tired. It simply continues, and the young brain must work hard to process a stream it cannot influence.
Researcher Dimitri Christakis, whose longitudinal work on media and child development has been widely cited, found associations between high levels of television exposure before age three and later attention difficulties. More recently, researcher Jenny Radesky and her colleagues have explored how fast-paced digital media can interfere with a toddler's developing capacity to self-regulate, the very skill that underpins emotional calm. The UK Chief Medical Officers have noted that evidence of harm concentrates in passive, solitary, high-volume use, particularly in the hours before sleep.
What the WHO recommends
The World Health Organization advises no screen time at all for children under 24 months, with the exception of video-calling, and no more than one hour per day for children aged two to four, always with a caregiver present. These thresholds are not arbitrary: they reflect the developmental windows during which the stress-regulation and attention systems are most actively forming.
Between the ages of one and four, the prefrontal cortex, the seat of impulse control, emotional regulation and sustained attention, is developing faster than at almost any other point in life. Alison Gopnik's research on early childhood cognition describes the toddler mind as a lantern rather than a spotlight: wide open to experience, easily overwhelmed and deeply dependent on the external environment for cues about safety and predictability. Screens flood that lantern with high-intensity stimulation, then cut it off abruptly. The cortisol response that follows an enforced screen transition is not a behavioural problem. It is a physiological one.
Researcher Sheri Madigan's large Canadian cohort study found that higher screen time at ages two and three was associated with greater behavioural problems at age five, with emotional reactivity among the strongest signals. The mechanism appears to involve both sleep disruption, screens before bed suppress melatonin production, and a gradual narrowing of a child's tolerance for the slower rhythms of everyday life.
Emotional dysregulation in a toddler looks like prolonged tantrums, difficulty transitioning between activities, heightened separation anxiety, trouble settling at nursery and an inability to tolerate boredom. None of these are signs that a child is broken. They are signs that a child's self-regulation system has not yet had the conditions it needs to strengthen. Researcher Adele Diamond's work on executive function development makes clear that self-regulation is a learnt capacity, built through thousands of small moments of challenge, mastery and repair in child-directed play. It cannot be built by watching a screen.
Radesky on distraction and dysregulation
Researcher Jenny Radesky has observed that when caregivers use screens as a primary tool for managing a toddler's distress, the child misses the co-regulation experience that teaches them how to manage distress themselves. Over time, this can increase rather than reduce emotional reactivity.
Lev Vygotsky described play as the leading activity of early childhood: a space in which children rehearse emotional control, negotiate complexity and push gently against the edges of their own capability. When a toddler stacks blocks, they experience the frustration of a tower falling and the satisfaction of rebuilding it. When they fit shapes into a sorter, they encounter resistance and resolution in a sequence entirely under their own control. These small arcs of challenge and success are precisely the material from which emotional resilience is made.
Researcher Jeffrey Trawick-Smith's TIMPANI study, which evaluated the developmental value of different toys, consistently found that open-ended, physically manipulable toys prompted longer, more cognitively complex play than screen-based alternatives. Kathy Hirsh-Pasek and Roberta Golinkoff have argued compellingly that the conditions for learning, including emotional learning, are playfulness, social connection, meaningful challenge and active engagement. Screens meet none of these conditions reliably for under-fives.
There is something almost self-evident about why a simple wooden toy calms a child when a tablet inflames them. The wooden object does only what the child makes it do. It does not flash, demand, accelerate or reward. It simply exists, patient and responsive, as a surface for the child's own imagination. Researcher Carly Dauch found that toddlers played more creatively and with greater concentration when presented with fewer, simpler toys, precisely the philosophy that has guided quality toy-making for centuries.
At Jaques London, established in 1795 and the world's oldest games company, this philosophy is not a trend. It is the founding principle. The Jaques wooden toys collection offers tactile, open-ended playthings designed to meet a toddler where they are: curious, physical and deeply capable of sustained attention when the toy deserves it. The Jaques educational toys collection is curated for the early years, prioritising materials and formats that support cognitive and emotional development together.
Routine is itself a regulator. When toddlers know what to expect, their stress-response systems can relax. Researcher Dana Suskind's work on early language environments emphasises the importance of predictable, interactive daily structures for brain development. A screen-free morning routine, even one of forty-five minutes before the day's pressures begin, can meaningfully shift a child's baseline emotional state. The key is not perfection but consistency: the same sequence, the same tone, the same basket of familiar toys.
Consider anchoring play sessions to natural transitions: after breakfast, after a nap, before the evening meal. Keep a small selection of open-ended toys visible and accessible. Rotate them weekly to maintain novelty without overwhelm. Where screens do feature in family life, the WHO and AAP guidance is consistent: co-view where possible, keep it brief, and never use screens as a wind-down tool in the hour before sleep.
A word on parental self-compassion
Screens exist because modern family life is genuinely demanding. Every parent has handed over a device to buy twenty minutes of calm. The research does not condemn that. It asks only that screens are the exception rather than the architecture of a toddler's day, and that the hours around them are rich with the touch, talk and play that developing brains most need.
Entirely normal, and rooted in physiology rather than defiance. Screens deliver a steady stream of dopamine-associated stimulation, and the abrupt removal of that stream is genuinely jarring to a toddler's nervous system. The transition itself is the problem, not the child. A reliable two-minute warning, delivered calmly and consistently, helps the brain begin to prepare. Having an appealing physical activity ready to move into, a shape sorter, a set of stacking cups or a favourite puzzle, reduces the gap between stimulation and silence that makes the meltdown likely. Over time, and with a more screen-limited routine overall, these transitions become easier as the child's baseline regulation improves.
The World Health Organization recommends no more than one hour per day for children aged two to four, and no screen time at all for those under two, other than video calls with family. The American Academy of Pediatrics echoes this and adds that content quality and co-viewing matter as much as duration. High-speed, highly stimulating content carries more risk than slow, simple, child-paced programming watched alongside a caregiver who talks about what is happening on screen. If your two-year-old is regularly watching more than an hour daily, or using screens alone, in darkness or within an hour of bedtime, these are the patterns most consistently associated with sleep disruption and emotional difficulty in the research.
It is a reasonable question, and the evidence does not rule it out. Researcher Sheri Madigan's cohort data found associations between high screen time in the toddler years and greater behavioural and emotional difficulties in group settings later. The mechanism is likely two-fold: children who spend significant time with screens have less practice navigating the unpredictability of real social situations, and may also carry a higher baseline arousal level that makes nursery transitions harder. It is worth mentioning screen habits to your health visitor or key worker if anxiety at nursery is persistent, as part of a broader picture rather than as an isolated cause.
The most calming toys share several qualities: they are physically manipulable, open-ended, quiet and completely responsive to the child's own actions. Wooden puzzles, stacking and nesting toys, threading beads, simple construction sets and tactile sorting games all fit this description. Repetitive, mastery-based play, doing the same thing over and over until it is right, is deeply regulating for the toddler nervous system and is a sign of healthy development rather than inflexibility. Outdoor physical play is also profoundly calming once initial energy is spent: researchers including Sandseter and Brussoni have found that moderate physical challenge in outdoor play reduces anxiety over time. For a considered starting point, the Jaques educational toys and wooden toys collections are worth exploring with your child's particular interests in mind.
Britain's oldest toy maker. Every toy open-ended, wooden, and built for exactly the kind of play the research recommends.