Is a low-information rural life bad for the brain? Sorting through what the research says
Introduction
About two years after moving from Okayama to Tokyo, I started noticing something. Living in the countryside, it feels like my thinking gets a little slower. And yet, coming to the city, the sheer volume of information can be overwhelming. The two feelings look contradictory at first, but I suspect they are two sides of the same coin — so I went through the research and tried to sort it out.
Here is what this post covers:
- 1. The countryside and IQ: what the data says
- 2. What the “flood of information” in the city actually is
- 3. The paradox: too little and too much are both a cost
- 4. Things anyone can do to protect their attention
- Wrap-up
- References
1. The countryside and IQ: what the data says
Several older reports found a gap in average intelligence-test scores between urban and rural areas.
- A 1996 study in educational psychology reported that children in areas far from cities tended to score lower on intelligence tests
- A survey in Japan found average intelligence deviation scores ranking as housing estates > general urban areas > farming villages
- Classic studies abroad found that for children in remote areas, gains in measured intelligence tended to slow as they got older
These gaps, though, are not thought to reflect any genetic superiority. The main driver is taken to be differences in the amount of educational opportunity, cultural stimulation, and environment that feeds intellectual curiosity. There is also the criticism that intelligence tests themselves are built on urban, school-oriented cultural assumptions, which puts children from rural environments at a disadvantage.
In practice, when I talk with people born and raised in Tokyo, there are moments where the breadth of what they know and how quickly they think is genuinely striking — something that feels like a gap in intellect. I don’t think that is innate ability at all. It is the accumulation of the information, the quality of conversation, and the range of people they have been exposed to since childhood, showing up as speed of thought and a deeper well of vocabulary to draw from. The urban–rural score gap in the research feels like exactly this, measured.
Some research points the other way
More recent work, on the other hand, finds the opposite: the stress of city life degrades performance on memory and attention tasks, while rural environments contribute to lower stress and better cognitive health. In other words, “amount of stimulation” and “stress load” trade off against each other, and you cannot simply say cities are better for the brain.
There is also a psychological reading that people who move to the city are driven by anxiety, while people who stay in the countryside live inside a structure where they do not have to carry it — a difference in thinking style and psychological disposition, not in intelligence.
2. What the “flood of information” in the city actually is
Move from the countryside to the city and the information you have to process — the density of visual and auditory stimulation, traffic, crowds — increases by an order of magnitude. This is said to have the following effects.
Cities cut both ways
- Exposure to urban environments strongly activates brain regions involved in perception, attention, and spatial cognition
- At the same time, it stimulates the neural circuits involved in stress and anxiety
- When that becomes chronic it accumulates as allostatic load (the buildup of biological markers of chronic stress), which leads to declines in attention and executive function
The limits of working memory
Human working memory holds only about three to seven chunks of information at once — remarkably small. When notifications, multitasking, and miscellaneous visual input stream in constantly, that limited capacity is consumed. Having less left over for deep thinking, learning, and creative work is what “information overload syndrome” refers to, and it is said to show up as reduced memory, judgment, and comprehension.
Decision fatigue
There is also the phenomenon known as decision fatigue: the more decisions and information you process in a day, the worse the quality of your later judgments. City life pushes up the total volume of those decisions. The daily pile-up of small calls — what to eat, which route to take, which notification to answer first — adding up to a noticeable drop in judgment by evening is something most people have felt firsthand.
3. The paradox: too little and too much are both a cost
Putting all of the above together, a paradox comes into view.
| Environment | The problem | Mechanism |
|---|---|---|
| Countryside | Too little intellectual stimulation in absolute terms | Lack of educational opportunity and cultural stimulation |
| City | The volume of information is itself the cost | Working-memory overload, decision fatigue, chronic stress |
So it is not that “the city is always good for the brain” or that “the countryside is always bad for it.” What matters is the balance between the information-processing load an environment demands and your own ability to process and organize it. Both environments have their upsides and downsides, and how you spend your time somewhere ends up mattering more to your brain than where that somewhere is.
In Okayama I sometimes felt the lack of stimulation as something missing. Since moving to Tokyo it has been the opposite — more often a sense of being swept up in a flood of information. Having experienced both over two years, “too little information and too much are both a cost to the brain, in their own ways” is what rings true to me.
4. Things anyone can do to protect their attention
Even if you cannot change your environment, small adjustments to daily habits can take the edge off.
- Set hours when phone notifications are off, deliberately creating time to think or work without anything interrupting you
- Decide when you look at news and social media, and stop scrolling aimlessly outside of that
- Don’t try to hold everything in your head — build the habit of writing things into a notebook or a notes app, letting information live outside your head
- On a packed train or anywhere noisy, block the sound with earphones to cut down sensory noise
- If you live in the countryside, deliberately create exposure to new information: read books, take online courses, talk with distant friends online
- If you live in a city, deliberately create low-information time: get out somewhere with nature on weekends, work from a quiet cafe
The point is to use both a mechanism for reducing information and a mechanism for increasing it, switching between them to fit your own rhythm. The abundance of stimulation in the city and the calm of the countryside can each become an advantage if you handle them well.
Wrap-up
- Too little intellectual stimulation in the countryside and too much information in the city can both affect cognition negatively
- What matters is not the location itself but adapting how you take information in and how you let your attention rest
- Paying attention to “how you deal with information” rather than “where you live” does more for day-to-day sharpness
References
- “Japanese Journal of Educational Psychology, 1996, 44, 470-477” (in Japanese)
- “The state of intelligence among children in urban housing estates” (in Japanese)
- “The misfortune of a lower IQ simply for being born somewhere remote” (in Japanese)
- Lone Star Neurology, “How Urban Vs. Rural Living Affects The Brain”
- note, “What is really behind the myth that rural people are less intelligent” (in Japanese)
- “City life or country life? Research reveals the psychological differences” (in Japanese)
- APA PsycNET, “Urban environments and mental effects”
- Sawai Health Promotion, “A new SOS for the information society: information overload syndrome” (in Japanese)
- Kokoasu Clinic Ichigaya, “Information and mental health” (in Japanese)
- note, “Part 3: Does too much information break people?” (in Japanese)
- “How Does Urban Design Contribute to Sensory Overload?”