Comprehensive Study Links Excessive Screen Time to Declining Child Development Outcomes

A new study analyzing decades of research reveals a clear connection between the amount of time children spend on screens and their overall development, showing poorer outcomes in learning, speech, and emotional regulation among those with higher usage.

Senior author Sheri Madigan, a professor of psychology at the University of Calgary, Canada, told CNN on Tuesday that researchers reviewed decades of data covering nearly three million children aged 18 and under across 64 countries.

“We found that overall, 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,” Madigan stated. She noted that while most associations were relatively small, such exposure is nearly universal in children's lives, making the findings significant.

Madigan also highlighted that newer studies demonstrate stronger associations than older ones, likely due to how technology has evolved from static television viewing into interactive, hand-held, and responsive devices.

Despite the findings, Madigan emphasized that parents should not view screens as inherently bad. Instead, families should monitor usage and ensure devices do not crowd out essential activities like sleep, physical activity, and human connection. She suggested establishing device-free dinners as a starting point.

Furthermore, Madigan argued that governments must share the responsibility by providing guidance, supporting research, and safeguarding children from online harms.

Independent experts also weighed in. Tatiana Íñiguez Berrozpe, senior lecturer in sociology at the University of Zaragoza, Spain, described the article as methodologically sound with an extremely large sample size. Meanwhile, Esther van Sluijs, professor of behavioral epidemiology at Loughborough University in the UK, noted that while the study is high quality, it cannot draw robust conclusions about specific types of screen use, such as gaming or social media.

The study was published in the journal JAMA Pediatrics.