“The use of physical action to alter the information processing requirements of a task so as to reduce cognitive demand.”
– Risko & Gilbert, Trends in Cognitive Sciences, 2016
What is cognitive offloading? It means using tools or physical actions to reduce mental work you would otherwise do internally. A calendar holds an appointment, paper keeps track of a calculation, and a map carries information you do not have to reconstruct from memory.
You have a medical appointment next Thursday. You can try to remember it, write it on a calendar, set an alarm, email yourself, or ask another person to remind you.
The important choice is what you want to accomplish. Getting to the appointment and learning enough about a subject to explain it are different goals. A tool can help with either, but completing the task does not tell you what you will remember or understand afterward.
A reminder changes the job your memory has to do
Remembering an intention at the right moment is called prospective memory. You do not need to keep Thursday’s appointment continuously in mind all week. You need to retrieve the intention when it is time to act.
A well-placed cue changes that problem. An alert can bring the intention back at the relevant time; leaving a bag by the door can remind you to take it. A 2023 review of intention offloading found external reminders effective for remembering delayed intentions.
Offloading reaches beyond memory. Risko and Gilbert’s review also describes physical actions that simplify perception or reasoning, such as changing an object’s orientation. Sapien’s article on enclothed cognition considers a different interaction between cognition and our surroundings; it is not the same mechanism.
Choosing an aid also involves a judgment about your own abilities. In three reminder experiments published in 2020, people used reminders more than the task’s reward structure warranted, partly because they underestimated their unaided memory. That laboratory result does not make everyday reminders a mistake. It shows that confidence and actual ability can point in different directions.
What is cognitive offloading good for? Start with the goal
Sapien’s practical distinction is between logistical memory, which keeps details available, and understanding, which lets you connect ideas and make judgments. These are useful descriptions for deciding how to use a tool, not two separate biological memory systems.
Offload what you need to retrieve; internalize what you need to think with. The rule does not require memorizing every fact. It asks which knowledge you need available inside the reasoning process, even while you consult outside sources.
| Task | What the tool can hold | What you may still need to understand or practice |
|---|---|---|
| Appointment or deadline | The date, time and alert | What preparation or action the commitment requires |
| Shopping list | The items you intend to buy | Whether the list still fits your needs |
| Complex project | Tasks, dependencies and calculations | Why a decision follows from those inputs |
| GPS navigation | A route and turn-by-turn directions | The route or landmarks, if learning the area is your goal |
| Reading and study notes | Quotations, references and details | The argument and relationships between ideas |
| Search or AI assistance | Retrieved material or a proposed answer | How to check the answer, explain it and apply it |
A notebook can therefore serve two purposes. It can store a fact for later, or help you work through a connection now. The meaningful question is what you do with it.
Better performance is one outcome. Learning is another.
Research on cognitive offloading measures several outcomes that are easy to blur together:
- Task performance: whether you complete the task successfully with the available aid.
- Unaided memory: what you can recall or recognize when the aid is absent.
- Understanding: whether you can explain relationships, judge an answer or use an idea in a different situation.
- Durable learning: what remains available after time has passed, rather than only during the assisted task.
Burnett and Richmond’s 2026 meta-analytic paper examined memory-based task performance. Offloading benefits varied with the experimental design and whether participants had to use an aid or could choose it. The paper was first published online in 2025. Its findings concern the memory tasks studied, not proof that any tool improves every kind of thinking or builds lasting knowledge.
A 2025 study by Kelly and colleagues tested a different question. Across five preregistered experiments, participants expected access to stored information, then faced recognition tests without it. Expecting support carried a small cost to unaided recognition. Reduced study time partly explained the effect, but not all of it.
That is a reason to pay attention to how information is learned and how reliable the aid is. It is not evidence of permanent memory damage. A person can perform well with a system while retaining less of the material that system carries.
Saving knowledge is different from building it
You may not need to remember a paper’s exact wording if you can find it again. But remembering its location cannot, by itself, tell you whether its reasoning is sound or whether a new finding contradicts it.
This is where conceptual knowledge matters. Saving anatomy notes preserves the information. Understanding how the structures relate requires you to use that information. The file and the internal model have different jobs.
In a 2011 study of learning from science texts, Karpicke and Blunt found that practicing retrieval outperformed the study conditions they compared, including concept mapping, on measures that involved comprehension and inference. That supports giving retrieval a place in learning; it does not mean that organizing notes is worthless or that one method always wins.
A practical approach is to keep the notes, then close them briefly. Explain the main idea in your own words, work through an example, and reopen the source to check what you missed. The attempt exposes a gap that a neatly saved page may conceal. Sapien’s discussion of reading and the brain explores a related question: what the activity actually asks your mind to do.
What is cognitive offloading doing when AI supplies the answer?
A calendar usually preserves a detail you have already chosen. An AI system can also propose the explanation, argument or solution you were going to construct. That can be useful assistance, but it changes which parts of the task you personally perform.
A 2025 randomized study in a Turkish high school compared mathematics practice with a standard GPT-4 assistant, a specially designed tutor, or no AI. Both AI versions improved assisted practice performance. On subsequent unaided exams, the standard-assistant group performed worse than the control group. The tutor, designed with teacher input and safeguards against simply supplying solutions, largely avoided that disadvantage.
The distinction is important: the tutor did not establish a clear unaided-exam advantage over the control group, and the study assessed short-term exams rather than long-term retention. It cannot establish inevitable skill loss from all AI use.
For a learning task, a useful application of the Sapien rule is to ask for a hint or a critique of your attempt, then solve or explain the problem yourself and check it against a reliable source. An instantly finished answer and an explanation you can reconstruct are different forms of success.
What is cognitive offloading costing you?
The cost depends on the capability you need to keep. These three questions turn the distinction into a practical check.
What needs to remain available?
If the problem is losing a detail or missing an intention, use a dependable place to store it and a cue you will actually encounter. A reminder should include enough context to act on it. “Appointment” and “appointment at three, bring the form” leave you with different amounts of work.
Reliability matters. If an important file is only available through an account you may lose, or an alert is routinely silenced, the external system has not fully solved the practical problem. Choose a suitable backup for information whose loss would matter.
What needs to remain possible without the tool?
If you want to learn an area, follow landmarks as well as the GPS instructions. To understand an argument, keep track of its assumptions as well as its conclusion. When your job involves checking an answer, preserve enough knowledge to notice when the answer does not make sense.
This is a decision about your goal, not a demand for independence from every aid. Checklists, accessibility tools and reminders can remain essential even when you know the material well. There is no virtue in making a task unnecessarily fragile.
How will you know that you learned?
Choose a check that matches the ability you want: explain an idea without copying the source, solve a new example, or recall the relevant point later. Use the result to identify what needs another attempt. Familiarity with a polished answer is not the same test as producing or applying it.
Your calendar can carry Thursday’s appointment. You still need to decide what to ask when you get there. That is the useful boundary: let a tool preserve the detail while you build the understanding needed to use it.
Read next: Cognitive Flexibility Exercises: Can You Actually Train Mental Adaptability? It examines a related everyday trade-off: whether getting better at a particular exercise changes the situations you care about.
References
- Risko EF, Gilbert SJ. Cognitive Offloading. Trends in Cognitive Sciences. 2016;20(9):676-688.
- Gilbert SJ, Boldt A, Sachdeva C, Scarampi C, Tsai PC. Outsourcing Memory to External Tools: A Review of Intention Offloading. Psychonomic Bulletin & Review. 2023;30:60-76. Published online 2022.
- Burnett LK, Richmond LL. Meta-analytic investigations of the effect of cognitive offloading on memory-based task performance and interindividual variability. Memory & Cognition. 2026;54:144-168. Published online June 11, 2025.
- Kelly MO, Karimjee B, Pereira AE, Lu X, Risko EF. Does expecting external memory support cost recognition memory? Memory & Cognition. 2025.
- Gilbert SJ, Bird A, Carpenter JM, Fleming SM, Sachdeva C, Tsai PC. Optimal use of reminders: Metacognition, effort, and cognitive offloading. Journal of Experimental Psychology: General. 2020;149(3):501-517. Published online 2019.
- Karpicke JD, Blunt JR. Retrieval practice produces more learning than elaborative studying with concept mapping. Science. 2011;331(6018):772-775.
- Bastani H, Bastani O, Sungu A, Ge H, Kabakcı Ö, Mariman R. Generative AI without guardrails can harm learning: Evidence from high school mathematics. Proceedings of the National Academy of Sciences. 2025;122(26):e2422633122.
