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MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

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Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#11
"Studies" like this bite at the ankles of every change in information technology. Victorians thought women reading too many magazines would rot their minds.

Given that AI is literally just words on a monitor just like the rest of the internet, I have a strong prior it's not "reprogram[ming]" anyone's mind, at least not in some manner that, e.g. heavy Reddit use might.

Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#13
post #8

Anybody who has tried to shortcut themselves into a report on something using an LLM, and was then asked to defend the plans contained within it knows that writing is thinking. And if you outsource the writing, you do less thinking and with less thinking there is less understanding. Your mental model is less complete, less comprehensive. I wouldn't call it "cognitive decline", more "a less deep understanding of the s…

This dynamic is frustrating on the individual level, but it is poisonous on the organizational level.

I am offended by coworkers who submit incompletely considered, visibly LLM generated code.

These coworkers are dragging my team down.

Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#15
When I'm really using AI, my mind is pushed to its very limits. I'm forced to maintain context that is much more complex than anything I had to keep in working memory pre-AI. But it also feels easier because you don't have to do nearly as much thinking to get every given task done. So maybe I get lazier, not in how much I accomplish, but in how much effort I put forth. So if my previous working intensity applied with AI would let me finish 10x as much work, now I'm content with exerting half as much effort and getting 5x as much work done as my pre-AI self.

Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#16

Isn't this a duplicate of https://news.ycombinator.com/item?id=44286277 ?

There are dozens of duplicates for pro-AI dreck, so this post should stand.

Being anti-AI drivel is completely fine though.

Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#19
post #8

Anybody who has tried to shortcut themselves into a report on something using an LLM, and was then asked to defend the plans contained within it knows that writing is thinking. And if you outsource the writing, you do less thinking and with less thinking there is less understanding. Your mental model is less complete, less comprehensive. I wouldn't call it "cognitive decline", more "a less deep understanding of the s…

This dynamic is frustrating on the individual level, but it is poisonous on the organizational level. I am offended by coworkers who submit incompletely considered, visibly LLM generated code. These coworkers are dragging my team down.

I'm sure they are, but maybe they just need some guidance. I was fortunate to learn this by myself, but when you just start out, it feels like magic. Only later do you realize you have also sacrificed something.

Re: MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

#20
A few things to note.

1. This is arxiv - before publication or peer review. Grain of salt.[0]

2. 18 participants per cohort

3. 54 participants total

Given the low N and the likelihood that this is drawn from 18-22 year olds attending MIT, one should expect an uphill battle for replication and for generalizability.

Further, they are brain scanning during the experiment, which is an uncomfortable/out-of-the-norm experience, and the object of their study is easy to infer if not directly known by the population (the person being studied using LLM, search tools, or no tools).

> We thus present a study which explores the cognitive cost of using an LLM while performing the task of writing an essay. We chose essay writing as it is a cognitively complex task that engages multiple mental processes while being used as a common tool in schools and in standardized tests of a student's skills. Essay writing places significant demands on working memory, requiring simultaneous management of multiple cognitive processes. A person writing an essay must juggle both macro-level tasks (organizing ideas, structuring arguments), and micro-level tasks (word choice, grammar, syntax). In order to evaluate cognitive engagement and cognitive load as well as to better understand the brain activations when performing a task of essay writing, we used Electroencephalography (EEG) to measure brain signals of the participants. In addition to using an LLM, we also want to understand and compare the brain activations when performing the same task using classic Internet search and when no tools (neither LLM nor search) are available to the user.

[0] https://arxiv.org/pdf/2506.08872

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