Can spaced practice help you remember after brain injury?
How spaced practice and fewer mistakes can help you learn specific skills again
You practice a new phone passcode a dozen times in a row and feel sure you have it. The next morning it is gone. That pattern is frustrating for anyone. After a concussion or a moderate to severe brain injury it can happen more often.
How you practice can change how well something sticks. Two ideas from memory research are especially useful after a brain injury. One is to spread practice out over time. The other is to set up learning so that you make as few mistakes as possible while the new information is settling in.
This guide covers what these methods are and what research shows in people with and without brain injury. It also covers which goals they fit and how to use them with your care team.
What spaced practice and spaced retrieval mean
Spaced practice, also called distributed practice, means splitting learning into separate sessions with breaks between them. Cramming the same amount into one sitting is called massed practice.
Spaced retrieval is a specific version. You try to recall a piece of information, then wait a little longer before the next try, and keep stretching the gap. A 2024 study described it as repeated memory testing after gaps that grow longer each time [1]. In the words of rehabilitation researchers, recall attempts are spread out over time instead of bunched together [2].
A simple example
Say you are learning your new apartment door code. A therapist asks you to recall it right away. If you get it right, the next check comes after 30 seconds, then after 1 minute, then 2, then 5. If you miss, you hear the right answer and the gap gets shorter again. Over a few sessions, the gaps can grow to hours or days.
What the evidence shows in people without brain injury
Most of the research on spacing comes from students and healthy adults. In 2013, a team of learning researchers rated ten common study techniques. Distributed practice and practice testing, which means quizzing yourself, received the highest rating. They helped students of many ages and ability levels [3]. The authors also noted that the techniques only help learners who are motivated and able to use them [3].
A review of rehabilitation methods points to a study in healthy adults showing that longer gaps between recall attempts led to better memory later [2]. These findings come from people without brain injury, so they cannot tell us how large the benefit is after one.
Learning without errors
Trial and error is how most people pick up new things. You guess, slip up and adjust. When memory works well, the slip fades and the right answer stays.
For people with severe memory problems, the error itself can stick. Researchers who ran a randomized trial in adults with acquired brain injury describe this risk. Errors made during early learning can get locked in, which is a particular problem when memory impairment is more severe [4].
Errorless learning
Errorless learning is a teaching approach that prevents mistakes while a skill is first being learned. The learner is not asked to guess or search memory for an answer they might get wrong [2]. The idea is often traced to a 1994 study by Baddeley and Wilson in people with severe amnesia, meaning a severe loss of the ability to form new memories [2].
In practice, the teacher shows the right answer or demonstrates the step first. The learner copies it, then practices with support until the answer comes easily.
Vanishing cues
The method of vanishing cues is another error control technique [4]. You start with strong hints, such as most of the letters of a word or most of the steps written out. Then the hints are removed bit by bit as you get more confident. The trial’s teaching method used a similar step, which it calls “carefully faded support” [4].
When some errors may be fine
Errors are not harmful for everyone. The same trial notes that trial and error learning may lead to more lasting learning for people with relatively mild memory problems [4]. In studies of people with aphasia, a language disorder that often follows stroke, comparisons have found no consistent harm from making errors during treatment [2]. In people with milder memory problems, such as early Alzheimer disease, learning that allows errors has done as well as errorless methods, or better [2]. So the best choice depends on how severe your memory problem is, which a therapist can help judge.
What the research shows after brain injury
The brain injury evidence is smaller than the student research. It mixes different causes of injury. Even so, several lines of work point in the same direction.
Reviews of structured teaching
A 2008 systematic review looked at 51 studies of teaching methods for people with memory problems from TBI, stroke, oxygen loss, brain tumors and dementia. Errorless learning, vanishing cues, spaced retrieval and structured teaching packages were the methods tied to good results. In all, 41 of the 51 studies reported favorable learning outcomes [5]. Results were weakest in people with dementia. The reviewers also flagged weak study methods and very mixed groups of participants [5].
A randomized trial of systematic instruction
One trial enrolled 29 adults whose acquired brain injuries, mostly TBI, had left moderate to severe thinking problems. It tested systematic instruction. That approach breaks a task into small parts, fades support slowly, gives quick corrective feedback and spreads practice out [4]. The comparison group learned by trial and error, getting feedback only after trying to fix their own mistakes [4].
Right after training, the two groups did about the same at using a handheld calendar. When tested again a month later, people taught with systematic instruction had kept more of the skill. They also used it more readily with people who had not trained them [4]. The authors could not tell which parts of the method mattered most [4].
Spacing compared with errorless learning
One study described in the rehabilitation review compared methods in people with memory problems from acquired brain injury or dementia. An expanding schedule, with gradually longer gaps between recall attempts, reliably outperformed errorless learning on final tests [2]. The review also notes that there is very little data on how long the gains from either approach last [2].
Comparison compiled by Safety Behind the Wheel Foundation
Teaching methods used in memory rehabilitation
| Method | How it works | Often used for |
|---|---|---|
| Spaced retrieval | Recall at gradually longer gaps | Facts, names, codes |
| Errorless learning | Show the answer first, avoid guessing | Severe memory problems |
| Vanishing cues | Strong hints removed step by step | Words, steps of a task |
| Systematic instruction | Small steps, faded help, spread practice | Devices, routines |
Sources: rehabilitation methods review [2]; systematic instruction trial [4]; 2008 systematic review [5]; INCOG 2.0 [6].
What the guidelines recommend
INCOG 2.0 is a set of international guidelines on memory rehabilitation after TBI, published in 2023. It says teaching should fit the person’s daily needs and keep errors low [6]. Its top rated teaching practices start with goals that matter in daily life and tasks broken into parts. They also call for enough practice, spread out over time, with varied examples and methods such as errorless learning and spaced retrieval [6].
Which goals these methods suit
These methods work best when the target is specific and the same each time. Research in this area has taught things like word lists, routes and the names of pictured objects [2]. The trial above taught people to check and enter calendar appointments on a handheld organizer [4].
Good targets might include:
- The names of a few new coworkers or care team members.
- A new phone number, door code or computer password.
- The steps to use a phone calendar or a new appliance.
- A morning routine, such as the order of getting ready.
- A short route, such as from the bus stop to a new clinic.
Limits on transfer
Learning one thing well does not mean other things will get easier. The Model Systems Knowledge Translation Center (MSKTC) has a memory factsheet that says research has turned up few ways to restore general learning and memory ability [7]. Spaced practice teaches the specific item you practice.
Gains may also stay tied to the setting where you learned them. In the 2008 review, only one of seven dementia studies reported that learning carried over to other situations [5]. To help skills carry over, the systematic instruction trial used several personally relevant examples for each skill [4]. INCOG 2.0 also recommends varied examples and goals tied to real life [6].
Practice takes time
These methods are slow. In a review of training for prospective memory (remembering to carry out plans later), rote rehearsal showed the largest gains but also required the longest treatment [8]. For a skill that matters, the time can be well spent. For something you only need once, writing it down may be the better choice.
Working with a therapist or practicing on your own
INCOG 2.0 recommends that skills training for people with moderate to severe TBI focus on strategies and be delivered by a therapist experienced in TBI [6]. It also wants a therapist involved in any computer based cognitive training [6].
For mild TBI, the 2021 VA/DoD guideline comes from the Veterans Affairs and Defense departments. It supports a short trial of clinician led cognitive rehabilitation when memory or attention problems continue [9]. The same guideline suggests against self guided computer training programs for cognitive rehabilitation [9]. Canada’s adult Living Concussion Guidelines suggest referral to a specialized program when thinking symptoms are persistent and complex. Self directed strategies are an option for others [10].
What a therapist adds
A speech language pathologist, occupational therapist or neuropsychologist can judge how severe your memory problem is and pick the right method. They can set the starting gap, decide when to use errorless steps, and choose targets that matter to you. They can also train a family member to run practice at home.
Apps and home practice
Some apps now schedule spaced practice automatically. A 2024 pilot study tested a spaced retrieval app used once a day for 4 weeks. It included 20 older adults with mild cognitive impairment due to Alzheimer disease, plus healthy younger and older adults [1]. Every person with mild cognitive impairment remembered more of the facts they had studied. In all, 19 of 20 improved by more than 10 percentage points. Memory for names and faces improved less [1]. This was a small study in people without brain injury, so it does not show how such apps work after TBI.
An older case study taught two people with mild Alzheimer disease to use a mobile phone. It combined spaced retrieval with errorless learning. Over time, both relied less on their written instruction card and could still make calls [11].
Trying spaced practice with your care team's plan
If your care team agrees, you can use spacing at home for a goal you choose together. Start with one target and keep sessions short. Fatigue is common after concussion. The Living Concussion Guidelines suggest spreading activities and breaks across the day [12]. Short sessions fit that advice.
A home practice checklist
Checklist from Safety Behind the Wheel Foundation
- Pick one specific target that matters this week.
- Write the correct answer or steps on a card before you start.
- Look at the card, then recall the answer right away.
- If you get it right, wait a little longer before the next try.
- If you are unsure, look at the card instead of guessing.
- Shorten the gap after a miss, then stretch it again.
- Practice on several days, at different times and places.
- Use the skill in real life as soon as you can.
A composite example
Imagine a 38 year old nurse whose moderate TBI came from a crash, now heading back to work. She keeps forgetting the code to the supply room. Her occupational therapist shows her the code, then asks for it after 30 seconds, 1 minute, 3 minutes and 10 minutes. Her husband checks again at dinner and at breakfast. When she hesitates, she looks at the card in her badge holder. After a week, she enters it without the card.
Signs it is working
Keep a short record for each target. Note the date, the longest gap you reached without the card, and whether you used the skill in real life that day. Over a week or two, the gaps should grow and the card should come out less often. If the gaps stop growing, or you keep making the same error, talk with your therapist about changing the target, the starting gap or the amount of support. Bring the record to your next visit so the team can see the pattern.
Keep driving separate
Do not practice a new route for the first time while you are behind the wheel. Learn it as a passenger or on a map first. If you are unsure whether your memory and focus are ready for driving at all, ask your care team about a driving assessment. Rules for returning to driving vary by state.
Questions to ask your care team
Question checklist from Safety Behind the Wheel Foundation
- How severe is my memory problem, and does that mean I should avoid learning by trial and error?
- Which everyday goals would be good targets for spaced practice?
- Can a therapist set up a spaced retrieval or errorless learning plan for me?
- How should my family help me practice at home?
- How long should I practice before we decide whether it is working?
- Is there an app you would trust for spaced practice, or is paper better for me?
- How can we help a new skill carry over to work, home or school?
- Should a driving assessment be part of my rehabilitation plan?
Frequently asked questions
Is spaced practice the same as brain training games?
No. Spaced retrieval targets a specific thing you need, like a code or a name. The VA/DoD guideline does not support unsupervised computer training as rehabilitation [9]. INCOG 2.0 calls for a therapist to guide any computer training [6].
Will this improve my memory in general?
Probably not on its own. Research has found few ways to restore general memory ability [7]. Learning in these studies often stayed with the trained task [5]. Spaced practice is a tool for learning specific things well.
Should I always avoid mistakes when I practice?
It depends on how severe your memory problem is. Errors are a bigger risk for people with severe memory impairment, while people with milder problems may learn well from trial and error [4].
Is this worth trying after a concussion?
Most adults recover from concussion within about a month [10]. When memory trouble lingers past that point, a referral or self directed strategies may make sense, so raise it at your next visit [10]. Most research on errorless learning involves people with moderate to severe memory problems [4, 5].
The bottom line
Recommendation from Safety Behind the Wheel Foundation
Spacing out practice and keeping errors low are well supported teaching methods. They can help people with brain injury learn specific skills and facts. They work best on clear, useful targets, with practice spread over days. They do not rebuild memory as a whole.
The strongest evidence after brain injury comes from structured programs. Work with your care team to choose targets, decide whether errorless steps are needed, and set up home practice that fits your recovery.
Sources and further reading
- 1Smith AM, Marin A, DeCaro RE, et al. Algorithmic spaced retrieval enhances long-term memory in Alzheimer disease: case-control pilot study. JMIR Form Res. 2024;8:e51943. formative.jmir.org/2024/1/e51943/PDF
- 2Middleton EL, Schwartz MF. Errorless learning and spaced retrieval in cognitive rehabilitation: a contrast of principles. Methodology paper, undated (references through 2011). rehabilitationresearch.jefferson.edu/…/errorless_learning_spaced_r…
- 3Dunlosky J, Rawson KA, Marsh EJ, Nathan MJ, Willingham DT. Improving students’ learning with effective learning techniques: promising directions from cognitive and educational psychology. Psychological Science in the Public Interest. 2013;14(1):4-58. psychologicalscience.org/…/which-study-strategies-make…
- 4Powell LE, Glang A, Ettel D, Todis B, Sohlberg M, Albin R. Systematic instruction for individuals with acquired brain injury: results of a randomized controlled trial. Neuropsychol Rehabil. 2012;22(1):85-112. pmc.ncbi.nlm.nih.gov/articles/PMC3279115
- 5Ehlhardt L, Sohlberg MM, et al. Evidence-based practice guidelines for instructing individuals with neurogenic memory impairments: what have we learned in the past 20 years? Neuropsychol Rehabil. 2008;18(3):300-342. Summary at apps.asha.org/…/602e6c31-b116-4f99-af70-87d…
- 6Velikonja D, Ponsford J, Janzen S, et al. INCOG 2.0 guidelines for cognitive rehabilitation following traumatic brain injury, part V: memory. J Head Trauma Rehabil. 2023;38(1):83-102. doi.org/10.1097/HTR.0000000000000837
- 7Hart T, Sander A. Memory and moderate to severe traumatic brain injury. Model Systems Knowledge Translation Center. June 2016. tbi.washington.edu/…/TBI-Memory_English_2018.pdf
- 8Raskin SA, Williams J, Aiken EM. A review of prospective memory in individuals with acquired brain injury. Preprint, Trinity College Digital Repository. 2018. core.ac.uk/download/232748304.pdf
- 9Department of Veterans Affairs, Department of Defense. VA/DoD clinical practice guideline for the management and rehabilitation of post-acute mild traumatic brain injury, version 3.0. 2021. Summary at apps.asha.org/…/f28e156a-8117-ee11-8145-005…
- 10Living Concussion Guidelines. Guideline for concussion and prolonged symptoms for adults 18 years of age or older: Cognitive difficulties. Updated May 2023. concussionsontario.org/…/cognitive-difficulties
- 11Lekeu F, Wojtasik V, Van der Linden M, Salmon E. Training early Alzheimer patients to use a mobile phone. Acta Neurol Belg. 2002;102(3):114-121. orbi.uliege.be/handle/2268/62018
- 12Living Concussion Guidelines. Guideline for concussion and prolonged symptoms for adults 18 years of age or older: Fatigue. Updated May 2023. concussionsontario.org/…/fatigue
This article reflects the safety priorities of brain injury rehabilitation and road safety education. It is meant as general education and is not medical advice. Learning methods should fit your own injury and goals, so check official sources and plan any practice with your own care team, including any questions about driving. Reviewed October 2026.
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