We arrived at a small café for a pleasant afternoon lunch with a group of friends. When we arrived, everyone was seated and chatting. There was a toddler in a pram between his parents. The toddler was absorbed by looking at a device attached to the pram.

Even before we sat down, there were welcoming smiles, and delightful conversations immediately flowed; lots of laughter and banter filled the air as we decided what to order. The toddler did not look up.

The parents were delightfully attentive. The toddler was clearly content and happy, looking and tapping at the screen.

“He just loves his screen time,” said one of the parents. “When he’s tapping, he’s happy. The only time he’s unhappy is when he’s not playing games with his cartoon friends. It’s great to see how happy he is.” We were all happy at this gathering. A great time was had by one and all.

Continuous Conversations Are Critical

Screen time replaces the universally critical back-and-forth interactions of looking, moving, and talking that occur during conversations. It is this specific, constant, and unrelenting process of face-to-face social talk, this face-to-face adult-to-child and child-to-adult engagement, that builds language, social understanding, and cognitive development (Hutton et al., 2020; Madigan et al., 2019; Nwachukwu et al., 2025; Rayce et al., 2024; Wan et al., 2025).

It is through these essential face-to-face communications that critical thinking and the development of permanent, complex language capacities begin to emerge. If this constant and ongoing, complex, social, face-to-face talk is not taking place, the brain will not respond as required (Hutton et al., 2020; Madigan et al., 2019; Nwachukwu et al., 2025; Rayce et al., 2024; Wan et al., 2025).

Language does not develop automatically. It grows through conversational turns—those small exchanges in which a child vocalises, a parent responds, and the child responds again, and again, ad infinitum. Research undertaken by Rayce and colleagues (2024) involving 31,125 children found that greater use of mobile devices was consistently linked to poorer expressive and receptive language skills. The research now points to a consistent (a socially and, perhaps, a neurologically “catastrophic”) reality: young children are growing up in an environment saturated with screens—bright, fast, and always available.

These detrimental personal and social circumstances are linked to significant language developmental deficits, poorer social and emotional attachments, increases in negative emotional presentations, and significantly lower levels of advancing cognitive potential for successful learning to take place, and importantly, to continue (Hutton et al., 2020; Madigan et al., 2019; Nwachukwu et al., 2025; Rayce et al., 2024; Wan et al., 2025).

These findings come from behavioural studies, parent reports, and brain‑imaging research showing changes in white‑matter pathways involved in language, where there is physical evidence of reduced connectivity in areas dealing with attention networks, as well as weaker expressive and receptive language, slower vocabulary growth, and poorer executive functioning (Choi et al., 2025; Massaroni et al., 2023; Rayce et al., 2024; Wan et al., 2025).

MRI and Diffusion Tensor Imaging

Using Magnetic Resonance Imaging (MRI) and Diffusion Tensor Imaging (DTI), Hutton and colleagues (2020) found that children aged 3–5 with higher screen time engagement had significantly lower white‑matter (myelin) integrity. Which, according to Hutton and colleagues (2020), meant that the essential neurobiological critical connections for language, literacy, and executive function were not developing. According to Fields (2008), this is associated with the very systems children require for thinking, attention, reasoning, learning, self-regulation, and self-management.

Further to this research on screen time engagement and its impact on myelin, a study by Xie and colleagues (2025) examined 11,878 children over two years and found that higher screen time predicted altered brain maturation and was strongly associated with attention difficulties and prefrontal cortex executive function deficits.

Furthermore, Xie and colleagues (2025) found that reduced prefrontal maturation is not merely about attention; it reflects physical damage to the axonal myelination systems that enable critical thinking, analysis, higher-order thinking, reasoning, and the development and maintenance of self-regulation and self-management.

Myelin

Myelin is a white, fatty, dielectric (electronically insulating) material composed mainly of lipids and lipoproteins that wraps around axons. This is known as myelination. These axons are also called neurological pathways or nerves. Myelin forms an insulating layer around these axons, allowing electrical impulses to travel faster and more efficiently along nerve cells. If myelin is not developing, the negative impact on brain architecture and personal development is significant (Coyle, 2009; Paus, 2010).

Continuous Device Viewing Replaces Developmental Potential

What needs to be noted here is that if a child is not analysing, they are not developing the neural circuits required for analysis. Continuous device viewing replaces developmental potential and experiences with passive consumption, rapid stimulus‑reward cycles, externally driven attention, fragmented cognitive states, and minimal internal processing (Christakis et al., 2018; Madigan et al., 2019; Sticca et al., 2025).

Your Choices, Your Power

This negative social circumstance and its potential brain-impacting effects do not have to continue. All of this can change now, just as fast and just as powerfully as a lightning bolt. This recognition of your power begins with the question posed in responsibility theory: “What am I responsible for, and what power do I have?”

The “lightning bolt” answer is: “I am responsible for, and I’ve got the power over what I think, do, say, learn, and choose.”

This power (which you own and control) can be applied now! Switch off all devices and start communicating.

This single act will elicit an immediate neurological response in the brain and reinforce the social processes that sustain essential cultural attachments and family interactions, shaping a child’s sense of belonging and identity. Ultimately, nothing is more important than family and all of the learning that takes place, especially when social interactions, conversations, and ongoing play are in progress (Purje, 2014).