Can memory rehabilitation still help months or years after an injury?
What later rehabilitation can offer, how long gains last, and how to set goals
Maybe your crash was two years ago, or ten. You finished therapy long ago, or you never had any. You have built a life around sticky notes and phone alarms. Yet you still lose track of conversations, miss deadlines, or forget what you came into a room to do. You may wonder whether the window for getting better has closed.
The short answer is that it has not, at least not on any fixed date. A Model Systems factsheet notes that recovery from brain injury goes on longer than experts once believed. Many people see improvements for years [1]. Rehab started long after an injury can still help, though what it helps with, and by how much, varies.
Thinking skills usually return within about a month for adults who have had a concussion [2]. Yet about 15% to 33% have thinking problems that last past the early phase and get in the way of their usual activities [2]. Effects often last longer after a traumatic brain injury (TBI) that is moderate or severe. This article looks at what studies of later rehab have found, how long the gains held up, and how to set goals that fit where you are now.
Two routes to a better daily life
Healing on its own
The first is natural recovery. Many people notice their thinking problems ease over time, sometimes for years after the injury [1]. That process is hard to predict for any one person. It does not follow a set timetable.
Learning to work around a problem
The second is learning skills that make daily life work better even when memory itself is still weaker than before. This is where most rehab does its job.
The 2023 INCOG memory guideline describes memory problems after TBI as having serious and lasting effects on daily life [3]. It recommends mental strategies, which appear most useful unless memory problems are severe. The guideline also recommends tools like phones and notebooks, especially for severe problems [3]. A Model Systems factsheet on memory after moderate to severe TBI puts it plainly: research has turned up little that brings back the brain’s own capacity for learning and recall [4]. Its advice centers on strategies and routines.
Why the difference matters
If you expect rehab to restore your memory to what it was, you may judge a program a failure when it has helped. Someone who now keeps every appointment because of a new routine has made real progress, even if a memory test score barely moves. Asking “Can I do the things I need to do?” is often a better yardstick than “Is my memory back?”
What studies of later rehab have found
Most research on rehab in the long term phase comes from veterans and service members with mild or moderate TBI. A few studies include people with more serious injuries or mixed brain conditions.
Clinical guidance
A Department of Defense guide for clinicians notes that people can benefit from cognitive therapy even years after an injury. It also asks clinicians to consider the person’s motivation when referring [5]. A 2019 review of 121 studies backed comprehensive programs, which blend help for thinking, emotions and daily skills. It said they help people after a TBI or a stroke at any level of severity, however long ago the injury was [6].
CogSMART in veterans
CogSMART is a 12 week program that teaches strategies for memory, attention, planning and symptom management [7]. A randomized trial enrolled 50 veterans with mild to moderate TBI who were working with an employment specialist. Half added CogSMART for 1 hour a week. The other half got extra job support visits instead, so both groups spent the same time with staff [7]. On average, their most recent TBI had happened more than 4 years earlier [7].
The CogSMART group had fewer postconcussion symptoms, did better at remembering to carry out planned tasks, and reported better quality of life [7]. The memory effect was strongest at 12 months. However, the two groups did not differ in getting competitive jobs [7]. The study was small, 16% dropped out. The people doing follow up testing knew who got which treatment [7].
SMART and SCORE in service members
A 2025 trial randomized 148 active duty service members with mild TBI and ongoing thinking complaints [8, 9]. The median time since their last mild TBI was more than 5 years [9]. One group got SMART, a program of reasoning and attention strategies, for 20 hours over 4 weeks [8]. The other got SCORE, an established 6 week program with about 60 planned hours [8].
Both groups improved on complex memory and strategic learning. The SMART group got there in about a third of the hours [8]. The study had no untreated comparison group, so some of the change could have come from other factors [8]. The original SCORE trial took place earlier in recovery. It enrolled service members 3 to 24 months after a mild TBI on deployment [10]. Its arms with a therapist did better on people’s own ratings of everyday thinking [9]. On attention and speed tests, all groups improved, with no clear difference between them [8]. Even so, fewer than 1 in 4 people had a meaningful drop in symptoms [9].
Comparison compiled by Safety Behind the Wheel Foundation
Studies of rehab started long after injury
| Study | Who took part | Time since injury | What changed |
|---|---|---|---|
| CogSMART trial | 50 veterans with mild to moderate TBI | More than 4 years on average | Fewer symptoms, better memory for planned tasks, better quality of life; no change in jobs |
| SMART and SCORE trial | 148 service members with mild TBI | Median more than 5 years | Both groups improved on complex memory; gains held 3 months later |
| Goal Management Training review | About 300 people in training groups, many with brain injury | Varied | Small to medium gains in planning and working memory tests |
| ReMiND trial | 72 adults after TBI, stroke or MS | About 5 to 11 years on average | More use of memory aids; no change in everyday memory ratings |
Sources: Twamley 2015 [7]; Venza 2025 and Darr 2025 [8, 9]; ReMiND 2012 [11]; Stamenova and Levine 2019 [12].
Mixed results in other groups
Not every late program changes daily life. The ReMiND trial placed people with memory problems from a TBI, a stroke or multiple sclerosis, 72 in all, into group memory programs or self help [11]. Average time since diagnosis or injury ranged from about 5 to 11 years across the groups. Those in the programs relied more on memory aids, yet ratings of their everyday memory stayed the same [11].
How long do the gains last?
Most studies followed people for a year or less after treatment.
The CogSMART trial is one of the longer ones. Its benefits held through a full year. Several of the effects grew larger over that time [7]. In the SMART and SCORE trial, the last check came 3 months after treatment ended. Gains on thinking tests were still there [9]. People’s own ratings of their thinking also held steady, though the SMART group’s ratings slipped a little, a change too small to be sure about [9].
Goal Management Training teaches people to pause and check their progress toward a goal. A 2019 meta analysis pooled studies with about 300 adults in its training groups, about half of them with a brain injury [12]. The benefits were small to medium, and the gains on thinking tests held at follow up [12].
Why some gains fade
A strategy only helps if you keep using it. An older review of memory techniques that rely on mental pictures found little evidence that people kept using them on similar tasks later on [13]. It also found that success depended on motivation and insight [13]. That is one reason the INCOG guideline asks programs to teach people how to use new skills in daily life [3].
What this means for you
Expect to keep using what you learn. Plan for check ins after a program ends, and ask whether a short refresher is possible if things slip. In the early weeks, a Model Systems factsheet suggests letting someone close to you prompt you to use your strategies [4].
Setting realistic goals now
Good goals for later rehab are specific and come from your own life [3, 5].
The Department of Defense guide describes goals built around particular activities or parts of life. Your therapists, along with family or friends, help you choose them [5]. The guide also lists what programs aim for. That includes a clearer sense of your own difficulties and better handling of daily life with new strategies. It also includes doing more of the things you care about [5]. The INCOG communication guideline recommends goal attainment scaling to measure results that matter to the person [14]. It also stresses getting back into daily roles and taking part in the community [14].
The same guide asks clinicians to weigh a person’s motivation before referring [5]. That is worth thinking about yourself. Later rehab takes time and practice between sessions, so it tends to work best when you have a clear reason to do it and the energy to follow through. If now is not the right season, that is a fair choice. The door stays open.
Examples of realistic goals
- Get through a full workday with no missed deadlines, using a written task list.
- Follow and remember the plot of a weekly TV show you enjoy.
- Manage the family calendar with a shared phone app.
- Return to a volunteer role two mornings a week.
- Cook a familiar meal from start to finish using a step card.
Imagine a 61 year old retired bus driver whose crash was seven years ago. He never had formal therapy. With an occupational therapist, he sets one goal: to handle his own medical appointments again. Over two months, he builds a routine with a wall calendar, a phone alert the night before, and a folder he brings to every visit.
Goals that may need a different plan
Some goals touch safety, such as managing medicines alone, handling large sums of money, or driving. These deserve a careful talk with your care team and, for driving, a formal check of readiness. Rules on driving after brain injury differ from one state to another.
What later rehab can look like
Programs vary in length, setting and intensity.
Mixing thinking therapy with mental health care
Mood, sleep and pain can all affect thinking. The concussion guideline asks for them to be treated as part of care [2]. In SCORE, one arm combined 3 hours of cognitive therapy with 1 hour of psychotherapy for anxiety and depression, every treatment day for 6 weeks [15]. The VA/DoD guideline for mild TBI notes that some people with long term symptoms and other health conditions may need a team to build their plan [16].
Shorter programs and video visits
For mild TBI, the VA/DoD guideline backs a brief, clinician led course of therapy. It advises against self guided computer programs [16]. The INCOG guideline on planning and organizing supports remote therapy. It notes that remote group programs may not match the results of in person groups [17].
Groups or one on one
Group memory programs are an option. INCOG found no evidence that they work better than individual therapy [3]. The same guideline encourages enough sessions and a focus on using new skills in daily life [3].
Checklist from Safety Behind the Wheel Foundation
- I can name one or two tasks I most want to manage better.
- I have noticed whether sleep, pain or mood are making my memory worse.
- I know which strategies I already use, and which ones I dropped.
- I have someone who can support my practice at home.
- I have asked about video visits if travel is hard.
- I have asked how my progress will be measured.
When a fresh evaluation makes sense
A new assessment can help if your life has changed. Starting a new job, going back to school, or losing a support person can make old problems show up again.
It also makes sense if something new appears. The VA/DoD guideline suggests looking for other causes when a symptom shows up for the first time more than a month after a mild TBI [16]. Do not assume every new problem comes from the old injury.
For concussion, the adult guideline suggests that formal testing makes the most sense once other conditions that affect thinking, such as poor sleep or low mood, have been treated [2]. It also says work and school supports should be checked and adjusted as needs change [2].
Bring a short record to that visit: what has changed, when it started, and what you have already tried. Notes like these give the team something concrete to work with. They can also help sort out whether an old problem has come back or something new is going on.
Questions to ask your care team
Question checklist from Safety Behind the Wheel Foundation
- Is it worth trying memory rehab now, given how long ago my injury was?
- What realistic changes could I expect in my daily life?
- Who would provide the therapy, and how many sessions would it involve?
- Could sleep, mood, pain or my medicines be holding back my memory?
- Should I have a new assessment before starting?
- Can my family or a friend learn how to support my practice?
- What happens after the program ends if my gains start to slip?
- Should my driving be checked as part of this?
Frequently asked questions
Is there a time limit for memory rehab?
No study has found a cut off date. Trials have helped people whose injuries were more than 4 or 5 years old [7, 9]. A 2019 review backed broad rehab programs regardless of how long ago the injury happened [6].
Will rehab bring my old memory back?
Probably not fully. Research has found little that rebuilds the brain’s own learning and memory capacity after a moderate to severe TBI [4]. Most benefits come from strategies, tools and routines that help you manage daily life [5].
Does it matter whether I had a concussion or a more serious injury?
It affects what research applies to you. Most trials of later rehab were done with veterans and service members who had mild or moderate TBI [7, 9]. For moderate to severe TBI, the INCOG guideline matches strategies to how severe the memory problems are, with more reliance on outside tools when problems are severe [3]. The 2019 review backed broad programs at every level of severity [6].
What if I tried rehab before and it did not help?
A different approach, a clearer goal, or treatment of other problems like sleep or mood may change the result. Ask your care team what was tried before and what could be done differently.
The bottom line
Recommendation from Safety Behind the Wheel Foundation
There is no known deadline for memory rehab. Studies in people injured years earlier, mostly veterans and service members with mild or moderate TBI, found gains in symptoms, memory for planned tasks, planning skills and quality of life. Some measures did not change. Most studies followed people for a year or less.
Later rehab works mainly by teaching skills and routines that make daily life easier. Choose goals tied to your life today, keep practicing after a program ends, and ask for a fresh look if your life or your symptoms change.
Sources and further reading
- 1Model Systems Knowledge Translation Center. Traumatic Brain Injury Factsheets, Edition 9 (includes “Alcohol Use After Traumatic Brain Injury”). August 2021. msktc.org/…/21-15903_TBI_Factsheet_Book…
- 2Living Concussion Guidelines (adult). Cognitive difficulties (section 9). Ottawa Hospital Research Institute. Recommendations updated May 2023. concussionsontario.org/…/cognitive-difficulties
- 3Velikonja D, Ponsford J, Janzen S, et al. INCOG 2.0 Guidelines for Cognitive Rehabilitation Following Traumatic Brain Injury, Part V: Memory. Journal of Head Trauma Rehabilitation. 2023;38(1):83-102. doi.org/10.1097/HTR.0000000000000837
- 4Hart 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
- 5Traumatic Brain Injury Center of Excellence, Defense Health Agency. Cognitive Rehabilitation for Patients Following Mild to Moderate Traumatic Brain Injury: Information for Referring Providers. Revised January 2021. health.mil/…/Cognitive-Rehabilitation-Fo…
- 6Cicerone KD, Goldin Y, Ganci K, et al. Evidence-Based Cognitive Rehabilitation: Systematic Review of the Literature From 2009 Through 2014. Archives of Physical Medicine and Rehabilitation. 2019;100:1515-1533. doi.org/10.1016/j.apmr.2019.02.011
- 7Twamley EW, Thomas KR, Gregory AM, et al. CogSMART compensatory cognitive training for traumatic brain injury: effects over 1 year. Journal of Head Trauma Rehabilitation. 2015;30(6). doi.org/10.1097/HTR.0000000000000076
- 8Venza E, Spence JS, Zientz J, et al. SMART accelerates rate of cognitive gains in service members with mTBI and PTSD. Frontiers in Human Neuroscience. 2025;19:1542422. pmc.ncbi.nlm.nih.gov/articles/PMC12098106
- 9Darr AJ, Basham A, Ryan JL, et al. Validation of Strategic Memory Advanced Reasoning Training as an efficient and effective approach to treating warfighters with persistent cognitive complaints associated with mild traumatic brain injury. Frontiers in Neurology. 2025;16:1541894. frontiersin.org/…/full
- 10Cooper DB, Bowles AO, Vanderploeg RD, Tate DF, Kennedy JE. Chapter 1: Study of Cognitive Rehabilitation Effectiveness Clinical Trial: Overview. Military Health System. Posted August 2020. health.mil/…/SCORE-Chapter-1
- 11das Nair R, Lincoln NB. Evaluation of rehabilitation of memory in neurological disabilities (ReMiND): a randomized controlled trial. Clinical Rehabilitation. 2012;26(10):894-903. doi.org/10.1177/0269215511435424
- 12Stamenova V, Levine B. Effectiveness of goal management training in improving executive functions: a meta-analysis. Neuropsychological Rehabilitation. 2019;29(10):1569-1599. doi.org/10.1080/09602011.2018.1438294
- 13Richardson JTE. Imagery mnemonics and memory remediation. Neurology. 1992;42(2):283-286. doi.org/10.1212/WNL.42.2.283
- 14Togher L, Douglas J, Turkstra LS, et al. INCOG 2.0 Guidelines for Cognitive Rehabilitation Following Traumatic Brain Injury, Part IV: Cognitive-Communication and Social Cognition Disorders. Journal of Head Trauma Rehabilitation. 2023;38(1):65-82. doi.org/10.1097/HTR.0000000000000835
- 15Ray MR, LeBlanc MM, Manning RK, et al. Chapter 5: Integrated Behavioral Health and Cognitive Rehabilitation Interventions for Persistent Symptoms Following Mild Traumatic Brain Injury (SCORE Arm 4), Part I. Military Health System. Posted August 2020. health.mil/…/SCORE-Chapter-5-Part-I
- 16Department 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 ASHA Evidence Maps. apps.asha.org/…/f28e156a-8117-ee11-8145-005…
- 17Jeffay E, Ponsford J, Harnett A, et al. INCOG 2.0 Guidelines for Cognitive Rehabilitation Following Traumatic Brain Injury, Part III: Executive Functions. Journal of Head Trauma Rehabilitation. 2023;38(1):52-64. doi.org/10.1097/HTR.0000000000000834
This article reflects the safety priorities of long term brain injury recovery and road safety education. It is general information, not medical advice, and research on later rehab is still growing. Please check official sources and talk with your own care team before making decisions about treatment. Reviewed October 2026.
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