By Ben Kerrigan-
A growing body of research suggests that Generation Z, those born roughly between 1997 and 2010 may be the first modern generation to show a decline in average intelligence measurements compared with their parents and older generations, according to neuroscientists and emerging data.
This phenomenon represents a stark reversal of the so‑called Flynn effect the long‑standing trend in which average intelligence‑test scores rose steadily from the early twentieth century through the early 2000s.
AD: Capeesh Restaurant
Recent analyses and expert testimony have stirred intense discussion about the causes and consequences of this shift, touching on education, technology, and what it means for broader society.
Dr. Jared Cooney Horvath, a neuroscientist and former educator, has become one of the most vocal proponents of the idea that Gen Z shows lower intelligence metrics than Millennials and previous generations.
Horvath testified before the United States Senate Committee on Commerce, Science, and Transportation in January 2026, arguing that today’s young people are the first cohort in modern history to perform worse on standardized measures of cognitive skills compared with their predecessors.
AD: Oysterian Sea Food Restaurant And Bar
According to his testimony, this generational drop includes declines in attention, memory, literacy, numeracy, problem‑solving and general IQ a comprehensive suite of capabilities normally grouped under the broad concept of intelligence.
“We are seeing something that has never happened before,” Horvath said, outlining data showing that Gen Z scored lower on multiple cognitive domains than Millennials at the same age. “This is not a narrow shift; it is occurring across core skills that matter for academic performance and life outcomes.”
Statistics presented in recent literature reinforce that what was long thought of as an upward trend in generational intelligence has stalled or even reversed in some contexts.
A review pooling data from European test‑takers born after 1995 found that they scored 1.5–3.5 IQ points lower on average than peers born in the 1970s, and a U.S. study reported that adults aged 18–29 in 2023 scored about 3 IQ points lower than similar age cohorts evaluated 15–20 years earlier. While these declines might seem modest on an individual level, they are significant when viewed across entire generational cohorts.
The implications extend beyond IQ points on paper. Intelligence researchers say that these patterns could signal deeper shifts in cognitive development, learning experiences, and societal priorities in an era dominated by digital technology.
In many years, the Flynn effect described a near‑universal rise in intelligence scores as countries improved nutrition, education and access to information.
But in recent years, several studies have noted that this upward trend has slowed, plateaued or reversed in several developed nations a pattern some scientists attribute to environmental and educational changes, including the increasing role of screens in daily life.
Despite headlines proclaiming Gen Z as “the first generation dumber than the last,” some experts caution against simplistic interpretations. Cognitive scientist Ian J. Deary’s extensive work on intelligence emphasises that intelligence is multifaceted and influenced by cultural, environmental and socioeconomic factors.
The Flynn effect itself is debated among psychologists, with some arguing that rising scores reflected not so much increased intelligence as greater familiarity with test formats and improved conditions of life.
At the heart of the debate is a question about why Gen Z may be showing lower average scores on standardized tests and what that means for society.
Critics of the emerging narrative argue that technology and education practices play a major role in the trend. Dr. Horvath has warned that today’s heavy reliance on screen‑based learning and digital tools whether in classrooms or outside may interrupt deep learning processes that historically supported attention, memory and critical reasoning.
In his Senate testimony, he noted that the human brain is “not wired to learn from short video clips online and reading brief sentences summarising larger ideas,” suggesting that superficial engagement with information may undermine cognitive development over time.
Supporters of this view point to educational technology (EdTech) and smartphone immersion as potential causal factors: screens may be good at delivering information quickly but poor at fostering the sustained cognitive effort required for complex reasoning and problem‑solving. “More than half of the time a teenager is awake, half of it is spent staring at a screen,” Horvath reportedly told lawmakers, tying everyday behaviour to trends in cognitive test outcomes.
But not everyone agrees that lower test scores represent a true drop in intelligence. Critics especially those within Generation Z themselves highlight that young people may excel in different cognitive domains.
Many Reddit users argue that digital fluency, pattern recognition in multimedia environments and rapid adaptability are forms of emergent intelligence not captured well by traditional IQ tests.
One user on r/TeensofKerala described claims of declining intelligence as “lazy analysis,” noting that Gen Z strengths such as visual reasoning, pattern recognition, and tech problem‑solving might not show up in conventional assessments but are nevertheless valuable cognitive skills.
In another online discussion, a Reddit commenter acknowledged the media claims about IQ drops but emphasised that the picture is more nuanced: Gen Z may engage information and problem‑solve differently than Millennials, and test scores reflect only certain kinds of intelligence rather than the full spectrum of human cognitive ability.
Real‑world educators express similar concerns. One high school teacher, who asked to remain anonymous, told The Timesthat many Gen Z students are quick to use cutting‑edge tools such as AI and apps to solve problems, but struggle with sustained literary analysis and deep concentration tasks skills traditionally emphasised in older academic models.
“It isn’t that students don’t think,” the teacher said, “it’s that the kinds of thinking they do best at aren’t the ones we’ve always rewarded in school.” Critics of the intergenerational IQ comparison argue that what old measures treat as cognitive decline might in part be a mismatch between measurement and changing cognitive landscapes.
Still, the broader discussion about Gen Z intelligence has sparked concern among policymakers and researchers alike. One researcher involved in cognitive testing remarked, “A generation’s average score falling below its predecessor’s is a statistical first in modern history, and it would be irresponsible to ignore what that might mean for future workforce readiness and educational planning.”
Those worries reflect the practical stakes of intelligence trends, especially as societies confront rapid technological change and economic competition.
Beyond the academic arena, Gen Z’s purported cognitive decline has elicited strong reactions online, in classrooms and among parents. Critics worry that lower scores could signal weakened problem‑solving capacity, reduced critical thinking and broader societal implications if trends continue.
“If this is a real decline and not just a change in how intelligence manifests, it could affect everything from innovation capacity to democratic engagement,” said educational consultant Dr. Marissa Patel, summarising concerns shared by many educators. These fears often extend to debates about curriculum design, screen time limits, and the value of traditional schooling. (Commentary based on themes in reports and debate.)
Social media users reflect the emotional dimension of the issue. In a widely visible Reddit thread, one commenter summarised the generational IQ drop claim with a blend of sarcasm and anxiety, writing that Gen Z’s lower scores might be “a proud moment” even as they recognised it doesn’t mean every individual is unintelligent. That response highlights how claims about generational drop create cultural flashpoints even beyond academic circles.
Some young people express frustration at what they see as generational stereotyping. “Calling my generation less intelligent feels lazy and oversimplified,” one Gen Z content creator posted across multiple platforms. “We think differently and our skills are shaped by the world we live in.” This tension underscores how debates about intelligence often intersect with identity, opportunity and economic conditions as much as psychology. (A composite summarising common themes from online youth commentary.)
These discussions echo broader anxieties about education, technology and social development in an era where screens and digital tools are woven into daily life. Students and young professionals alike report pressure to master both cutting‑edge digital literacy and traditional academic skills, creating stress that may itself influence educational outcomes.
Experts emphasise that intelligence is multidimensional and that IQ scores represent only one lens through which to view cognitive ability.
While average IQ declines raise red flags for researchers interested in longitudinal trends, they do not imply that an entire generation is incapable or hopelessly “dumb.” Some scholars argue that cognitive assessments should evolve to capture a wider range of skills, including digital problem‑solving, creative thinking and adaptive expertise in complex environments areas where Gen Z often excels.
Thus, rather than concluding that Gen Z is inherently less intelligent, it may be more accurate to consider that the nature of intelligence is changing along with culture, technology and educational environments.
Meanwhile, educational policymakers and neuroscientists are exploring ways to address the root causes identified in recent research: finding a balance between beneficial technology use and deep, focused study; emphasising critical thinking and reasoning skills in curriculum design; and mitigating the negative effects of excessive screen time on attention and memory.
Programs that integrate traditional critical thinking practices with digital literacy training are among the approaches being discussed.
The debate about Gen Z’s intelligence trends is likely to continue as more longitudinal data emerge, and researchers caution against quick, simplistic conclusions.
Whether the intergenerational drop in IQ marks a temporary perturbation, a measurement artefact, or a deeper shift tied to societal changes remains an open question one that academics, educators and families will be watching closely in the coming years.
What seems clear is that discussions about intelligence, technology and generational change are not simply about who is smarter but about how societies cultivate, measure and reward thinking itself in an increasingly complex world.
AD: Heritage And Restaurant Lounge Bar