Children's brains shaped by their time on tech devices

Time spent watching television or playing computer games has measurable and long-term effects on children's brain function, according to a review of 23 years of neuroimaging research, which while showing negative impacts also demonstrates some positive effects.

However, the researchers stopped short of advocating limits on screen time, which they say can lead to confrontation. Instead, they urge policymakers to help parents navigate the digital world by promoting programs which support positive brain development.

The evidence review, published today in the peer-reviewed journal Early Education and Development, is an analysis of 33 studies which use neuroimaging technology to measure the impact of digital technology on the brains of children under the age of 12. In total, more than 30,000 participants are included.

In particular, the research finds screen time leads to changes in the pre-frontal cortex of the brain, which is the base of executive functions such as working memory and the ability to plan or to respond flexibly to situations. It also finds impacts on the parietal lobe, which helps us to process touch, pressure, heat, cold, and pain;the temporal lobe, which is important for memory, hearing and language; and the occipital lobe, which helps us to interpret visual information.

Reference: Children’s brains shaped by their time on tech devices, research to-date shows; Early Education and Development, DOI: 10.1080/10409289.2023.2278117.