Are Screens Making Kids Less Smart? | The Truth About EdTech (2026)

The Digital Dilemma: Unraveling the Impact on Cognitive Development

In a world increasingly dominated by screens, a neuroscientist's mission to reduce digital exposure in schools has sparked a critical debate. Jared Cooney Horvath, a former teacher turned neuroscientist, has sounded the alarm on educational technology's potential detrimental effects on children's cognitive capabilities. His book, “The Digital Delusion”, presents a stark reality check, suggesting a decline in cognitive abilities among the younger generation.

A Generation at Risk

Horvath's argument is grounded in the observation that IQ scores have been on a downward trajectory since around the year 2000, despite an increase in time spent in school. He attributes this decline to the rapid integration of educational technology, a multi-billion-dollar industry, into classrooms.

“The more time students spend on screens at school, the further their scores fall,” Horvath asserts, citing data from the Programme for International Student Assessment (PISA). This claim, however, is not without its critics.

Confounding Factors and Expert Perspectives

Rose Luckin, an emerita professor at the UCL Knowledge Lab, cautions against conflating correlation with causation. While acknowledging that educational technology was often sold on promises rather than proven results, she emphasizes that not all edtech is inherently problematic. Luckin's perspective highlights the complexity of the issue, suggesting that moderate device use might even enhance educational outcomes.

Daisy Christodoulou, director of education at No More Marking, agrees that society has been somewhat casual in its approach to new technologies. She believes there's a need for a more nuanced understanding of technology's role in education, especially in light of Horvath's concerns.

Dylan Wiliam, an emeritus professor of educational assessment, adds a crucial caveat: “The question we need to be asking is, ‘when does edtech help learning?’ And the answer is, ‘it’s complicated.’”

Navigating the Digital Landscape

As we navigate the digital age, the debate over screens in education raises important questions. Are we sacrificing cognitive development for the sake of technological advancement? Or can we find a balance that leverages technology's benefits without hindering learning?

Personally, I believe that while technology can be a powerful tool, it should be used judiciously. The classroom, after all, is a place of learning and discovery, and we must ensure that the tools we employ enhance, rather than hinder, this process. It's a delicate balance, and one that requires careful consideration and ongoing research.

In my opinion, the key lies in understanding the unique needs of each student and tailoring educational approaches accordingly. While technology can provide personalized learning experiences, it's crucial to ensure that it doesn't become a crutch or a barrier to deeper understanding.

This debate underscores the need for a critical examination of our educational practices. As we move forward, we must ask ourselves: How can we best prepare our children for a digital world without sacrificing their cognitive potential?

Are Screens Making Kids Less Smart? | The Truth About EdTech (2026)
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