Researchers have identified a consistent, though modest, relationship between the amount of time children spend in front of screens and several key aspects of their development. The analysis, which examined data on almost three million children under the age of 18 from 64 nations, was published in JAMA Pediatrics and highlighted weaker performance in learning, speech, behavior and emotional regulation among children with higher screen exposure.
Study Scope and Findings
Senior author Sheri Madigan, a psychology professor at the University of Calgary, described the work as a comprehensive review of decades‑long research. The study aggregated findings from a broad range of investigations, providing a global perspective on how screen use correlates with developmental outcomes. Madigan told CNN that “greater screen time was associated with poorer outcomes for children across several areas of development, including how they think, learn, speak, behave, and regulate emotions.”
While the statistical links were described as “relatively small,” the authors emphasized that small effects can still be meaningful when the exposure—screen time—is nearly universal among children. Notably, newer research within the review showed stronger associations than older studies, suggesting that changes in the nature of screen use may be influencing the relationship.
Implications for Parents and Policy
Madigan cautioned against interpreting the findings as a blanket condemnation of all digital devices. She noted that technology can serve as a valuable tool for learning, creativity and social connection, but it can also displace activities essential for healthy development, such as sleep, physical activity, face‑to‑face interaction and unstructured play. As a practical step, she recommended families consider “device‑free dinners” or set regular times when everyone puts devices aside to foster direct connection.
Beyond the household, the researcher argued that governments should play an active role, treating screen use similarly to other well‑being factors. This could involve issuing guidance for families, supporting research, providing education and safeguarding children from online harms. Such public‑policy signals, she said, would help align the actions of parents, schools and technology companies.
Expert Reactions and Limitations
External experts praised the study’s methodological rigor. Tatiana Íñiguez Berrozpe, a senior lecturer in sociology at the University of Zaragoza, called the article “methodologically very sound” and highlighted its “extremely large” sample. She added that the findings reaffirm long‑standing research, noting that the observed association between screen time and poorer mental‑health or academic indicators is “very small.”
Esther van Sluijs, a behavioral epidemiology professor at Loughborough University, also commended the work but warned that the data do not allow robust conclusions about specific screen activities such as social‑media use or gaming, due to insufficient detail. She urged caution when applying the results to today’s diverse digital habits.
Madigan stressed that the study’s correlational design cannot establish causation. It remains possible that children who are already experiencing developmental challenges may turn to screens more frequently. Future research will aim to identify which children are most affected by different digital experiences and to clarify the direction of these associations.
Overall, the review underscores a nuanced picture: while screens are an entrenched part of modern childhood, higher usage levels are modestly linked to less favorable outcomes in several developmental domains. The study calls for balanced parental strategies and coordinated policy efforts to ensure that digital tools complement rather than crowd out the experiences children need to thrive.
Helene Elliott is the Lead Science & Space Reporter at News Raise. She reports on aerospace missions, astrophysics discoveries, quantum research, and environmental technology.
