Gen Z less intelligent than parents, neuroscientist says

New analyses of decades-long testing data are forcing a rethink about how a generation learns. Researchers point to a sharp reversal in a trend that once saw steady academic gains: the latest cohort of young people is underperforming compared with their predecessors on a range of standardized measures.

The finding has unsettled teachers, parents and policymakers because it’s not limited to one subject or region. Instead, the declines show up in attention, memory, literacy, numeracy and broader measures of reasoning — a pattern that raises questions about schooling, technology and how modern life reshapes cognition.

What the research actually reveals about Gen Z test results

Neuroscientists and educational analysts who have reviewed international testing data report a meaningful drop in scores after a long period of gradual improvement. Rather than a blip, the change appears across multiple domains of cognitive performance and across many countries.

• Multi-domain decline: Tests measuring reading comprehension, mathematical problem solving, attention and working memory all show declines, not just isolated weaknesses.
• Global pattern: The downward shift emerges in datasets spanning dozens of nations, suggesting the phenomenon isn’t explained by any single school system or cultural factor.
• Timing aligns with tech adoption: The steeper drops coincide with the rapid integration of digital devices into classrooms and everyday life.

Scholars stress that standardized tests are imperfect tools, but the size and scope of the change make it unlikely to be a measurement artifact. Researchers warn this is a systemic shift, not a random fluctuation.

How screens and classroom technology may be reshaping learning

As schools adopted laptops, tablets and online platforms, reading habits and classroom practices changed. Educators replaced lengthy texts, extended problem sets and sustained classroom discussion with modular lessons, micro-explanations and interactive apps. Outside school, young people spend large portions of waking hours with social media, video and short-form content.

Experts point to several ways this environment could blunt deeper learning:

1. Fragmented attention: constant notifications and rapid switching reduce the time students spend focusing on complex material.
2. Surface learning: bite-sized explanations encourage skimming rather than working through difficult concepts.
3. Reduced cognitive struggle: tools that provide instant answers can short-circuit the effortful practice that builds problem-solving skills.
4. Less sustained reading: long-form texts and deep comprehension exercises have become less common, weakening advanced literacy.

Many researchers argue the brain adapts to what it experiences most — if the environment rewards speed and novelty, cognitive skills that require persistence and depth may erode over time.

Voices from research and policy: concerns raised to lawmakers

Scientists who study learning have brought their findings before policymakers, describing patterns they see in classrooms and test results. During a recent congressional hearing on children and screen time, experts emphasized how pervasive device use can be and urged lawmakers to consider its effects on development and schooling.

Some of the key points made to legislators included:

• Teenagers now spend a large fraction of their awake time engaging with screens, which reduces opportunities for uninterrupted study and face-to-face interaction.
• Classroom tech often prioritizes convenience and engagement metrics over cognitive rigor.
• Policy interventions could target school practices to ensure that digital tools support, rather than replace, deep learning.

Researchers are careful not to demonize technology outright; many acknowledge its benefits while insisting that balance and instructional design matter.

Practical steps educators and families are considering

In response to the data, some schools and districts are experimenting with changes aimed at rebuilding cognitive depth without abandoning useful technology. Proposed and piloted measures include:

• Reintroducing longer texts and multi-day projects to encourage sustained attention.
• Limiting in-class device use for activities that require deep thinking.
• Training teachers in practices that foster productive struggle, metacognition and effortful problem solving.
• Designing edtech that intentionally cultivates focus and reflection rather than constant stimulation.

Actions parents can try at home

• Establish regular blocks of screen-free time for reading or focused homework.
• Encourage activities that require delayed gratification and sustained effort, such as learning an instrument or tackling complex projects.
• Ask children to summarize longer articles or explain problem-solving steps to develop deeper comprehension and reasoning skills.

Both policy and daily habits are part of the conversation; educators say neither alone will reverse trends that developed over years of changing practices.

Debates and open questions in the field

Scholars caution against simplistic explanations. While digital immersion and classroom policies are compelling factors, other influences — shifts in curriculum, changes in extracurricular time, sleep patterns, mental health trends and socioeconomic forces — may also contribute.

Key questions researchers are pursuing include:

• How much of the decline can be directly attributed to screen exposure versus broader cultural changes?
• What forms of digital instruction preserve or enhance deep learning?
• Which interventions in schools produce measurable improvements and over what time frame?

Ongoing studies aim to untangle these variables and test targeted changes. The debate is moving from alarm to experimentation, as educators and policymakers look for practical ways to rebuild skills that sustained earlier generations.

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William Anderson

William Anderson is a multimedia producer specializing in videos, podcasts, and interactive galleries. With five years of immersive content creation, he turns information into a rich audio‑visual experience. His storytelling skills draw you directly into the heart of every story, on any platform.