Should AI Take Your Notes? What a 405-Student Experiment Found
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An AI note taker can turn a dense chapter into a tidy summary in seconds, and that is exactly the problem. Reading a clean summary feels like understanding. But a large randomised experiment published in Computers & Education suggests that if the AI does the processing for you, a lot less of the material stays in your head a few days later.1 This guide explains what the study found, why it happens, and a simple hybrid workflow that keeps the speed of AI without giving up your memory.
What the study actually tested
Researchers from Cambridge University Press & Assessment and Microsoft Research ran a pre-registered experiment with 405 students aged 14 to 15 in schools in England.1 Students studied two text passages under different conditions:
- AI only: they could use a chatbot (a large language model) to help them understand the text.
- Notes only: they took their own notes on the text.
- AI + notes: they used the chatbot and also took notes.
Three days later, they took comprehension and retention tests. That delay matters: it measures what you still know when the exam comes, not what you can repeat five minutes after reading.
The results in plain English
| Condition | Comprehension and retention after 3 days |
|---|---|
| AI only | Lowest of the three |
| Notes only | Significantly better than AI only |
| AI + notes | Significantly better than AI only |
Two findings stand out. First, note-taking, alone or combined with AI, beat AI alone on both comprehension and retention.1 Second, most students preferred the chatbot and perceived it as more helpful, while they credited note-taking with deeper engagement and better memory. In other words, the method that felt best was the one that worked worst for remembering.
The researchers did not conclude that AI is useless. Students valued it for making complex material more accessible and less overwhelming, and the authors suggest AI can support initial understanding and interest, as long as it does not replace the thinking.1
Why polished AI notes create false mastery
Memory research has shown the same pattern for decades. When students reread a text, it feels more and more familiar, so they predict they will remember it. When they are tested a week later, students who practised recalling the material instead of rereading it remember far more.2 Recognising something is not the same as being able to retrieve it.
An AI summary is the ultimate rereading material: well organised, fluent and easy to nod along to. It removes the effortful steps (deciding what matters, putting it in your own words, connecting it to what you know) that make information stick. A major review of study techniques rated rereading, highlighting and summarisation as low-utility, and practice testing as high-utility.3
Are you relying on AI too much?
1 = never, 5 = always
I usually study from an AI summary rather than my own notes.
I rarely close my notes and try to recall the material from memory.
I feel confident after reading a summary, then blank on exam questions.
I ask AI to summarise whole lectures instead of explaining specific parts.
I almost never explain a topic out loud in my own words.
The hybrid workflow: AI for understanding, you for remembering
The goal is to keep the part of AI that helps (unblocking you on hard material) and keep the effortful part for yourself. Here is a four-step routine you can use on any lecture or reading.
Step 1: Capture the material
Record or import the lecture, slides or reading as usual. If your university allows recording, keep the original audio or slides: an AI transcript is a draft, not a source. Check high-risk details (dates, formulas, definitions) against the original before you study from them.
Step 2: Use AI to unblock, not to summarise for you
Ask the AI to explain the one paragraph you don't understand, give you a simpler example, or define a term. Avoid asking it to "summarise the whole lecture" and then reading that summary as your study material.
Step 3: Write your own five key ideas, without looking
Close the AI and the source. Write the five most important ideas from memory, in your own words, and draw one connection between them. This is where the learning happens: you are choosing, paraphrasing and retrieving. Then reopen the source to fix what you got wrong.
Step 4: Explain it back and test yourself
Explain the topic out loud as if teaching a friend, then answer a few questions on it a day later and again a few days after that. Retrieval spaced over time is one of the most reliable ways to make knowledge last.2,4
The hybrid AI study routine
When it's fine to let AI write the notes
AI-generated notes are not always a problem. They are useful for material you need to find again rather than remember (logistics, reading lists, meeting minutes), for a first pass over a reading so you know what to focus on, and for accessibility needs where transcription removes a real barrier. The rule of thumb: if you will be tested on it, you need to have processed it yourself at least once.
Doing this in Noto Studio
Noto is built around the hybrid approach. You can import slides, PDFs or a photo of your notes into a note, ask the study assistant to explain the part you're stuck on, and then write your own summary in the same editor. When you're ready, Explain It Back asks you to explain the concept in your own words and checks your explanation against your note, flagging what you missed. Then turn the same note into a quiz or flashcards for spaced retrieval before the exam. AI does the setup; you do the remembering.
References
- Kreijkes, P., Kewenig, V. N., Kuvalja, M., Lee, M., Hofman, J. M., Vitello, S., Sellen, A. J., Rintel, S., Goldstein, D. G., Rothschild, D. M., Tankelevitch, L., & Oates, T. (2026). Effects of LLM use and note-taking on reading comprehension and memory: A randomised experiment in secondary schools. Computers & Education, 243, 105514. https://doi.org/10.1016/j.compedu.2025.105514 · Free to read
- Roediger, H. L., III, & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. https://doi.org/10.1111/j.1467-9280.2006.01693.x
- Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest, 14(1), 4–58. https://doi.org/10.1177/1529100612453266
- Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380. https://doi.org/10.1037/0033-2909.132.3.354 · Free full text: eScholarship (University of California)
Every study cited on the Noto blog, with a free full-text link whenever one legally exists, is collected in the Noto science library.
Frequently asked questions
Are AI-generated notes bad for studying?
Not always, but studying only from AI output tends to hurt retention. In a randomised experiment with 405 students, using an AI chatbot alone led to lower comprehension and retention after three days than taking notes, while combining AI with note-taking also beat AI alone.
What is the best way to use AI to take notes?
Use AI to explain the parts you don't understand, then close it and write the key ideas in your own words. Finish by testing yourself or explaining the topic out loud. AI should support your thinking, not replace it.
Why do AI summaries feel so helpful if they don't help memory?
Fluent, well-organised text feels familiar, and familiarity is easy to mistake for knowing. Memory research shows that recalling information from memory produces much better long-term retention than rereading, even though rereading feels more productive.
Should I record my lectures for an AI note taker?
Only if your university's rules allow it. If you do, keep the original recording or slides, check important details against them, and still write your own summary and self-test questions.
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