Evidence

Why This Works

“Some men see things as they are, and say why. I dream of things that never were, and say why not.” Robert F. Kennedy

We are not going to tell you a home lab heals PTSD. Nobody has shown that, and we will not be the first to claim it. What follows is what the research does support, graded honestly, including where it is thin.

First

What We Do Not Claim

We are not a medical or mental health provider. We do not diagnose, treat, or manage PTSD, TBI, depression, or any other condition.
There is no published clinical trial on home labs. None. Not by us, not by anyone.
We do not claim our program changes anyone’s brain. We have run no imaging, no neuropsychological testing, and no controlled study.
We do not claim causation from our own results. What we observe in our participants is uncontrolled.

The narrower claim we will defend: the mechanisms our program is built on each match published, veteran-specific research. That is a smaller statement than most organizations make, and it is one we can stand behind.

01 · Need

The Problem

Roughly 29% of Iraq and Afghanistan era veterans will experience PTSD at some point, against about 6% of the general population. As of June 2026 some 335,000 veterans were unemployed, a third of them for fifteen weeks or longer, with a post-9/11 veteran unemployment rate of 4.8%. In surveys, 41% of veterans report loneliness or isolation since leaving service.

Meanwhile the information technology sector is short of people and pays well. The gap is not capability. It is credentials, structure, and a reason to get up.

02 · Program

What We Do

Hardware placement

Enterprise equipment issued to the veteran at no cost, theirs to keep, so practice does not end when class does.

Structured build path

A sequence of real builds with a defined target, not open-ended tinkering.

Peer cohort

A named group with a standing meet. Nobody receives equipment alone.

Career on-ramp

Certification aligned to roles employers actually screen for, with placement support.

03 · Evidence

Four Mechanisms, Graded

Each component above maps to a mechanism with published research behind it. We grade each one by the strongest study design available, and we state the caveat that goes with it.

Mechanism 1

Structured, goal-directed activity

Strong

Study: Randomized controlled trial in Iraq and Afghanistan era veterans, n = 80.
Finding: Behavioral activation produced greater reductions in self-reported PTSD severity and depression than referral to standard care.
Source: Wagner, Jakupcak, Kowalski, Bittinger & Golshan (2019), Psychiatric Services 70(10), 867–873. doi:10.1176/appi.ps.201800572
Honest caveat: There were no differences on clinician-administered PTSD measures. The effect appeared on self-report only.

Mechanism 2

Real work, not sheltered work

Strong

Study: Multi-site randomized controlled trial across 12 VA sites, n = 541.
Finding: Steady employment 38.7% with supported employment versus 23.3% with transitional work. Any competitive employment 68.6% versus 57.0%. Median earnings $7,290 versus $1,886.
Source: Davis, Kyriakides, Suris et al. (2018), JAMA Psychiatry 75(4), 316–324. doi:10.1001/jamapsychiatry.2017.4472
Honest caveat: PTSD symptoms improved equally in both arms. This demonstrates an employment effect, not symptom reduction.

Mechanism 3

Cognitive demand embedded in vocational training

Mixed

Study: Meta-analysis of 60 studies covering 4,108 participants, examining cognitive deficits in PTSD.
Finding: Deficits across every domain measured. Verbal learning 0.62, processing speed 0.59, attention and working memory 0.50, verbal memory 0.46, executive function 0.45.
Source: Scott, Matt, Wrocklage et al. (2015), Psychological Bulletin 141(1), 105–140. doi:10.1037/a0038039

Supporting trial: cognitive training inside vocational services

Competitive employment 50% versus 25%, and $5,193 in additional average earnings. O’Connor, Mueller, Kwon et al. (2016). doi:10.1682/JRRD.2014.10.0231 Caveat: 18 participants, and the comparison group received supportive therapy that was not focused on employment, so this is not a test against good vocational services. The authors called for a larger trial. In this population it has not been run.

Supporting trial: cognitive management added to PTSD therapy

In a trial of 100 participants, adding structured cognitive management to standard PTSD therapy produced additional gains in attention, working memory, learning and novel problem solving. Jak, Jurick, Crocker et al. (2019), JNNP 90(3), 333–341. doi:10.1136/jnnp-2018-319315

Counter-evidence, stated plainly

The largest randomized test of this idea added compensatory cognitive training to supported employment for 153 unemployed adults and compared it against strong supported employment alone. Cognitive training improved working memory, depressive symptoms and quality of life, but produced no difference in work attainment, weeks worked or wages over two years. Forty-seven percent found competitive work either way. Twamley, Thomas, Burton et al. (2019), Schizophrenia Research 203, 41–48. doi:10.1016/j.schres.2017.08.005 These were people with schizophrenia, bipolar disorder and major depression, not veterans with brain injury, so it is not a direct refutation. But it is the strongest evidence on the question and it cuts against us: the authors concluded that supported employment produces competitive work regardless of cognitive status.

Mechanism 4

Absorbed hands-on building and social connection

Suggestive

Study: Small uncontrolled study with narrative review. 12 veterans with mental health conditions, 10 of them diagnosed with PTSD, engaged in scale modeling.
Finding: Mean wellbeing scores rose from 14.4, a low score, to 23.8, within the population-normal range, p = 0.003. Eleven of twelve improved.
Source: Lawrence & Ellison (2023), British Journal of Occupational Therapy 87(3), 143–151. doi:10.1177/03080226231208053
Also: Loss of unit cohesion and experiential isolation are central to poor transition outcomes. Gettings, Kirtley, Wilson-Menzfeld et al. (2022), Frontiers in Psychology 13, 873885. doi:10.3389/fpsyg.2022.873885
Honest caveat: This is the weakest evidence on this page. No control group, self-reported outcomes, and a sample of twelve.

04 · Mechanism

About the Brain

This is where most organizations overreach, so we want to be precise about the line between what is established and what is not.

What is well established

PTSD is associated with measurable cognitive impairment. Across 60 studies and 4,108 participants, deficits appear in attention, working memory, executive function and processing speed, functions supported by prefrontal systems. That is not in dispute.

What is plausible but unsettled

The idea that absorbing hobby work puts someone into a neurologically defined flow state is not established. A 2022 systematic review of the neural basis of flow examined 25 studies and 471 participants and concluded the evidence is sparse and inconclusive.

So we will not say it. We will not tell you a home lab puts a veteran into a neurologically defined flow state. What we will say is narrower. The cognitive deficits are real and measurable, and cognitive support inside training improves cognition, mood and quality of life. It has not been shown to raise placement rates on its own — the employment result comes from putting people into real work, which is Mechanism 2. We build both, and we are not going to credit the first with the second’s results.

05 · Sustainability

Is The Mission Sustainable

A donor is entitled to ask whether the inputs this program depends on will still be here in ten years. Three of the four are growing. One is shrinking, and we will say so plainly.

62 Mt: Global e-waste generated in 2022, up 82% since 2010. Projected to reach 82 Mt a year by 2030, a further 33% increase.
22.3%: Documented e-waste recycling rate in 2022, projected to fall to 20% by 2030. Waste is rising roughly five times faster than documented recycling.
$91B: Value of recoverable metals in the e-waste generated in 2022.
29%: Projected growth in information security analyst roles from 2024 to 2034, about 16,000 openings a year at a median wage of $124,910.
3.6%: Share of 11,300 roles at large firms that genuinely removed a degree requirement. The net hiring effect was 0.14 percentage points, roughly 97,000 of 77 million annual hires, fewer than one in 700. Forty-five percent of the companies studied made changes in name only.
18.3M: US veteran population in 2023, projected to fall to 12.1 million by 2048, a 34% decrease. Gulf War and post-9/11 veterans account for 7.8 million, 43% of the current population.

Why the model holds

Input costs are structurally low because the hardware is donated.
Corporate donors receive certified sanitization and ESG reporting, so the transaction is worth something to them beyond goodwill.
The program produces its own labor. Graduates run donor intake.
Regulatory pressure increasingly favors documented reuse over disposal.

The input that is shrinking

The veteran population is projected to fall by 34% by 2048. That is good news for the country and it means the need this program serves will contract.

Our commitment: when the need shrinks, we will report that honestly rather than manufacture reasons to keep asking for money.

06 · Research agenda

What We Are Doing To Close The Gap

The honest position is that our specific model has not been tested. Here is what we are doing about that.

Measure from intake, at fixed intervals, using validated instruments.
Publish null results. If it does not work, that finding is worth as much as a positive one and we will say so.
Maintain the boundary. We collect wellbeing data. We do not interpret it clinically, because we are not qualified to.
Open to external research partnerships. If a university group wants our cohort as a study population, the door is open.

The Bottom Line

Four Things That Predict Whether A Veteran Does Well

Structured goal-directed activity. Real competitive work rather than sheltered work. Cognitive demand delivered inside vocational training. Absorbed hands-on building alongside other people.

Every one of those has published research behind it in veteran populations. Our program is built to deliver all four at once. Whether that combination outperforms its parts is the question we intend to answer with data, and we will publish the answer either way.

How the program works Support it

Sources

References

Wagner AW, Jakupcak M, Kowalski HM, Bittinger JN, Golshan S (2019). Behavioral activation as a treatment for PTSD among returning veterans. Psychiatric Services, 70(10), 867–873. doi:10.1176/appi.ps.201800572
Davis LL, Kyriakides TC, Suris AM, et al. (2018). Effect of evidence-based supported employment vs transitional work on achieving steady work among veterans with PTSD. JAMA Psychiatry, 75(4), 316–324. doi:10.1001/jamapsychiatry.2017.4472
Scott JC, Matt GE, Wrocklage KM, et al. (2015). A quantitative meta-analysis of neurocognitive functioning in posttraumatic stress disorder. Psychological Bulletin, 141(1), 105–140. doi:10.1037/a0038039
O’Connor MK, Mueller L, Kwon E, et al. (2016). Enhanced vocational rehabilitation for veterans with mild traumatic brain injury and mental illness: pilot study. Journal of Rehabilitation Research and Development, 53(3), 307–320. doi:10.1682/JRRD.2014.10.0231
Twamley EW, Thomas KR, Burton CZ, et al. (2019). Compensatory cognitive training for people with severe mental illnesses in supported employment: a randomized controlled trial. Schizophrenia Research, 203, 41–48. n = 153. No difference in work attainment, weeks worked or wages versus supported employment alone. doi:10.1016/j.schres.2017.08.005
Jak AJ, Jurick S, Crocker LD, et al. (2019). SMART-CPT for veterans with comorbid PTSD and history of traumatic brain injury. Journal of Neurology, Neurosurgery & Psychiatry, 90(3), 333–341. doi:10.1136/jnnp-2018-319315
Lawrence C, Ellison D (2023). A small-scale study exploring the efficacy of scale modelling as an open intervention for military veterans with mental health conditions. British Journal of Occupational Therapy, 87(3), 143–151. doi:10.1177/03080226231208053
Alameda C, Sanabria D, Ciria LF (2022). The brain in flow: a systematic review on the neural basis of the flow state. Cortex, 154, 348–364. 25 studies, 471 participants. Evidence described as sparse and inconclusive. doi:10.1016/j.cortex.2022.06.005
Gettings RD, Kirtley J, Wilson-Menzfeld G, et al. (2022). Exploring the role of social connection in interventions with military veterans. Frontiers in Psychology, 13, 873885. doi:10.3389/fpsyg.2022.873885
Baldé CP, Kuehr R, Yamamoto T, et al. (2024). Global E-waste Monitor 2024. United Nations Institute for Training and Research. ewastemonitor.info
Fuller J, Langer C, Sigelman M (2024). Skills-based hiring: the long road from pronouncements to practice. Burning Glass Institute and Harvard Business School Project on Managing the Future of Work.
U.S. Bureau of Labor Statistics. Occupational Outlook Handbook, information security analysts. bls.gov
D’Aniello Institute for Veterans and Military Families (2026). Veteran employment and transition data. ivmf.syracuse.edu
U.S. Department of Veterans Affairs, National Center for PTSD. PTSD prevalence among Iraq and Afghanistan era veterans. ptsd.va.gov
Pew Research Center (2023), citing U.S. Department of Veterans Affairs population projections.

C4I Veteran Services Corp is a workforce development and peer support organization. We are not a medical or mental health provider and do not treat PTSD, TBI, or any other condition. Nothing on this page is medical advice or a substitute for professional care. If you are a veteran in crisis, dial 988 and press 1.