3 weeks ago
Can People Become Less Intelligent? Study Explores Reverse Flynn Effect
For a long time, people got better and better at puzzles that measure how well they can think, and scientists called this the Flynn Effect.
Lately, researchers have noticed that in some countries, people are not doing as well on those puzzles as before.
This change is called the Reverse Flynn Effect.
The scientists do not think people are actually getting less smart.
They believe things like changes in schools, more time on screens, reading less, and some families having harder lives may affect the scores.
These puzzles only test a few skills, like memory and solving problems, not creativity or how well someone understands feelings.
Not every country is seeing a drop, and some places still have steady or improving scores.
Scientists want to do more studies to figure out why this is happening.
They hope that better education and healthier childhoods can help people think well in the future.
The Flynn Effect describes steadily rising intelligence test scores across much of the 20th century, linked to better nutrition, healthcare, education and living conditions.
New research published in the journal Intelligence examines a 'Reverse Flynn Effect' of declining scores on certain intelligence tests in some developed nations.
Scores have levelled off or declined in the United States, the United Kingdom, Norway, Denmark and Finland, particularly among younger generations.
Researchers say the shift is unlikely to have a single cause and may involve education changes, digital technology use, reduced reading, online distractions and social inequalities.
The decline is not universal, with some countries still recording stable or improving scores, and researchers call for more long-term studies to understand the trend.
- Who
- Researchers who published a study in the journal Intelligence.
- What
- Evidence of a 'Reverse Flynn Effect,' with intelligence test scores levelling off or declining in some developed nations.
- Where
- The United States, the United Kingdom, Norway, Denmark and Finland, among other countries where declines or plateaus have been reported.
- When
- The research was recently published in the journal Intelligence; a specific date is not stated in the article.
- Why
- Possible factors include changes in education systems, reliance on digital technology, reduced reading, online distractions, and widening social and economic inequalities.
Key facts
- Study topic
- Reverse Flynn Effect (declining intelligence test scores)
- Journal
- Intelligence
- Countries with reported declines
- United States, United Kingdom, Norway, Denmark, Finland
- Original trend
- Flynn Effect - rising IQ scores through much of the 20th century
- Suggested causes
- Education changes, digital technology, reduced reading, online distractions, inequalities, pollution, poorer health
- Skills measured by tests
- Reasoning, memory, problem solving
- Skills not captured
- Creativity, emotional intelligence, practical knowledge
- Global pattern
- Not universal; some countries still show stable or improving scores










