Most children show a two-way relationship between screen time and cognitive development, where each influences the other over time, but a small group of children follow entirely different patterns. A new study published in the Journal of Communication analyzed data from 87 children over five years and found that parental use of screens to calm upset children is connected to how their brains develop, though the nature of that connection varies significantly from child to child.

What Does This Research Actually Tell Us About Screen Time?

The study focused on executive functions, which are mental skills that help children plan, focus attention, and manage multiple tasks at once. Two key parts of this system are cognitive flexibility (the ability to shift thinking or adapt to new rules) and inhibitory control (the capacity to resist impulses and stop automatic behaviors). These skills develop rapidly during early childhood and form a foundation for academic and social success.

Researchers wanted to understand the timing of cause and effect. Parents often use smartphones, tablets, or television to help calm their children during tantrums or emotional struggles, a practice known as media emotion regulation. But the question isn't simply whether screens cause developmental problems. Instead, researchers asked whether the relationship works differently for different children.

"The relationship between using media to calm children and development is different for different children," explained Jane Shawcroft, an assistant professor in the School of Communication at The Ohio State University. "Most kids we found a bidirectional pattern, using media to calm them was related to their cognitive development, and their cognitive development in turn was related to how often their parents used media to calm them down."

Jane Shawcroft, Assistant Professor, School of Communication at The Ohio State University

How Did Researchers Identify These Different Patterns?

The research team analyzed data from Project M.E.D.I.A., a long-term study following child development. They tracked 87 children from age two and a half to seven and a half years old. Each year, parents completed surveys about how often they used media to manage their child's emotions. When children were between five and seven years old, they completed computer-based tasks to measure their executive functions.

To test inhibitory control, children played a game where they had to identify the direction of a middle arrow while ignoring surrounding arrows pointing in different directions. To test cognitive flexibility, they completed a card-sorting task that required them to sort pictures by one rule, such as color, and then suddenly switch to a new rule, such as shape.

The researchers identified three distinct developmental patterns among the children:

• Bidirectional Pattern: The vast majority of children, 87.36 percent or 76 kids, showed a two-way street where parental use of media to soothe them predicted their later executive function skills, and their executive function skills equally predicted how often parents would use media to soothe them in the future.
• Media-Driven Pattern: A much smaller group, making up 7 percent of the sample or six children, showed that parental use of media to regulate emotions strongly predicted the children's later cognitive flexibility and inhibitory control, but the reverse was not true.
• Diverging Pattern: The third group, making up 6 percent of the sample or five children, showed that media use strongly predicted changes in cognitive flexibility, but the pattern flipped for inhibitory control, with inhibitory control predicting media use.

What Family Factors Predict Which Pattern a Child Will Follow?

When researchers looked at what might predict which group a child belonged to, they found that parental mental health played a significant role. Higher levels of parent depressive symptoms at the start of the study were linked to a higher probability of a child being in the Media Emotion Regulation Driven group. Higher parent depression was also linked to a lower probability of a child being in the Bidirectional group. Other factors like household income, parent stress, and child temperament did not have a statistically significant relationship with group membership.

"Understanding how to support children in relationship to their technology use is going to be more about understanding your child and your family's unique situation rather than a one-size-fits-all approach," Shawcroft added.

Jane Shawcroft, Assistant Professor, School of Communication at The Ohio State University

How Should Parents Think About Screen Time and Development?

The findings suggest that the relationship between screen use and cognitive development is not straightforward or universal. For most children, the connection works both ways: using screens to calm them affects how their brains develop, and how their brains develop affects whether parents feel the need to use screens for soothing. But for some children, one direction dominates the other.

It's important to note that this study focused on temporal ordering, or which event happens first, rather than whether screen use causes harm. The research doesn't tell us whether using media to calm children results in poorer cognitive development overall. However, other studies have suggested that high screen time in infancy might indirectly lead to poorer emotional regulation later in childhood, and that problematic media use in toddlers is linked to increased emotional and social difficulties a few years later.

The study was relatively small, involving 87 children, largely because collecting detailed behavioral data over a five-year span is difficult. The small number of children in the two minority classes means these specific group percentages should be treated as estimates that need further testing in larger groups.

The key takeaway for parents is that there's no universal rule about screen time and child development. Understanding your own child's temperament, your family's stress levels, and your mental health as a parent may be just as important as monitoring screen time itself. The research suggests that a personalized approach, tailored to your child and family's unique situation, is more likely to be effective than following generic guidelines.