Researchers who have been monitoring almost 400,000 Americans for the past ten years have noticed a trend that is remarkably similar to an intellectual slow fade: Americans are becoming less intelligent, not metaphorically, but quantitatively. Although not everyone is experiencing cognitive collapse, there has been a discernible decline in the average scores for critical reasoning abilities. The results of the SAPA Project are especially instructive, showing that fundamental areas like logic, mathematical reasoning, and vocabulary are progressively declining—one percentile at a time.
Scientists found that the Flynn Effect, the long-standing trend of rising IQ scores, has not only stalled but reversed across a large portion of the population by looking at data gathered between 2006 and 2018. There is more to this reverse Flynn Effect than just statistical noise, and it is especially common among young adults. It highlights a gradual but concerning shift in a country’s overall mental performance.
The study’s framing—the cognitive data were gathered under the pretense of a personality test—was one of its most inventive features. This implied that participants were probably not viewing the reasoning exercises as important assessments. The outcome? An unvarnished look at the capacity for casual reasoning. Surprisingly, the age group most immersed in digital life, overloaded with instant media, and exposed to algorithmic content loops—those aged 18 to 22—saw the biggest IQ declines.
U.S. Intelligence Decline
Topic | Details |
---|---|
Area of Study | Intelligence decline across cognitive domains in Americans |
Key Researchers | Elizabeth Dworak, Karen Wu, Northwestern University, Psychology Today |
Period of Concern | 2006–2018 (reverse Flynn Effect window) |
Key Dataset | SAPA Project (Synthetic Aperture Personality Assessment Project) |
Affected Areas | Verbal reasoning, computational reasoning, matrix reasoning |
Improved Area | 3D Rotation (visuospatial skill) |
Sample Size | 394,378 American adults |
Reference Source | Psychology Today – Are Americans Really Becoming Less Intelligent? |

American life has arguably become much faster but cognitively shallower as a result of smartphones being incorporated into almost every aspect of daily life. Over the course of the study, smartphone ownership in the United States increased from 3% to over 80%. These gadgets might have evolved into subtle yet effective cognitive saboteurs, as researchers noted. Smartphones are thought to dramatically impair mental focus, whether they are used during testing or are just present in the room. They are remarkably good at facilitating communication, but they are also very good at dividing attention into pieces that are too thin for critical thought.
This change doesn’t happen alone. It is a reflection of larger social trends. For instance, even among college graduates, verbal reasoning—the ability to comprehend and work with language structures—has decreased. The class of the 2010s did worse on vocabulary tasks than the class of the 1970s. This is not merely a technical decline; rather, it suggests that, despite the rapid growth of digital content, reading comprehension, articulation, and linguistic accuracy may be gradually deteriorating.
Ironically, visuospatial ability was one area that significantly improved. This increase, which was probably brought on by playing video games and using visual technology, demonstrates that environmental stimulation still has an impact on cognition. This is a two-edged sword, though. Although it may now be easier to rotate objects in three dimensions, the abilities needed to comprehend abstract concepts or resolve complex problems are deteriorating. This change reflects a larger realignment of cultural and educational priorities.
Schools may be producing more programmers than thinkers if they change the curriculum to heavily emphasize STEM without sufficiently preserving the humanities. The content of education has changed, but the overall quality isn’t necessarily declining. Researchers claim that curricular changes may have made reasoning, rhetoric, and abstract problem-solving less important. These changes may unintentionally decrease cognitive elasticity, even though they are frequently made in the name of job readiness.
Influence and intelligence are becoming more and more separated in the context of American celebrity culture. Even though they hardly ever advocate for intellectual depth, celebrities like Logan Paul and Kim Kardashian have enormous cultural capital. This signifies a subtle reorientation of the definition of success. Public intellectuals, on the other hand, who were once well-known, have withdrawn from popular platforms. Values are shaped early on by these cultural cues. Youngsters who are exposed to TikTok trends and quick fame are learning more about virality than verbal reasoning.
Motivational decline is another noteworthy explanation. It’s possible that many participants skipped over the reasoning sections of the SAPA Project because it was designed to be a personality test. However, even that lack of drive could be a sign of something more serious: a cultural trend toward instant satisfaction. Short-form scrolls, videos, and memes are replacing long-form thinking, which was once a prized ability. Even though digital media is incredibly flexible, excessive use of it is teaching children to avoid difficult mental tasks.
Even in the face of gloom, there is hope. People may simply be less interested in the types of tasks that IQ tests measure, as Elizabeth Dworak noted, rather than being less intelligent as a result of the declines. That’s a very hopeful and obvious distinction. Reasoning skills could be significantly enhanced with the correct interventions, such as limiting tech distractions, encouraging critical reading, and reintroducing debate.
Even though intelligence is now packaged differently, society still values it. Influencers from very different fields, such as Emma Chamberlain and Neil deGrasse Tyson, show that intelligence can still be compelling when conveyed well. Culture could regain some of its lost ground by emphasizing intellectualism in leadership, education, and entertainment.
Researchers intend to extend their dataset to span four decades in the upcoming years, which may provide even more thorough insights. In addition to determining when the decline started, that type of longitudinal analysis will be very effective in determining how to halt it.
The results serve as an early warning for the time being. Instead of declining due to environmental collapse or genetic deterioration, intelligence is changing as a result of shifting priorities, tools, and habits. However, those are also human-correctable since they are human-driven.
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