Quick question: when did your staff last complete accessibility training?
Follow-up question: how much of it do they actually remember?
If the answer to the second question is 'not much', you're not alone. And it's not your staff's fault.
What is the forgetting curve?
In the 1880s, German psychologist Hermann Ebbinghaus conducted the first systematic study of human memory. He memorised lists of nonsense syllables (meaningless combinations like 'WID' and 'ZOF' to eliminate pre-existing associations) and tested his own recall at various intervals.
What he found was uncomfortable but has been repeatedly replicated:
He called this the 'forgetting curve', and it describes the exponential decline of memory retention over time when there is no attempt to reinforce what was learned.
A 2015 replication study published in PLOS ONE confirmed that Ebbinghaus's original results hold up over a century later (Murre & Dros, 2015). This isn't a quirk of Victorian psychology. It's how human memory works.
The critical insight: the steepest drop happens immediately. The biggest window of forgetting is the first hour after learning. After that, the rate of loss slows, but the damage is done. If you don't reinforce within the first 24 hours, most of what was taught is already gone.
Why annual training doesn't work
Most organisations do accessibility training once a year. A 30-minute e-learning module, maybe an hour-long session. Staff complete it, tick the box, move on.
Six months later, when a customer with complex requirements actually arrives, what do they remember?
Almost nothing useful. The knowledge has decayed along the forgetting curve. They're back to guessing, feeling awkward, or defaulting to unhelpful instincts ('just be kind' isn't a barrier removal strategy).
You've spent the money. You've got the completion certificates. But you haven't got trained staff. You've got compliant staff, which is a very different thing.
The research confirms this. One study found that spaced repetition can improve long-term retention by up to 200% compared to massed practice or cramming (Kang, 2016). That's the difference between staff who remember and staff who don't.
The compliance trap
Here's the uncomfortable truth: most accessibility training exists for compliance, not competence.
Organisations need to demonstrate they've trained staff. So they buy a module, track completions, file the certificates. Box ticked. Insurance satisfied. Regulator appeased.
But completions don't equal competence. A certificate doesn't help when a Deaf customer is trying to check in and your receptionist has forgotten everything about communication access. A tick on a spreadsheet doesn't remove a single barrier.
The Equality Act 2010 requires reasonable adjustments. If your staff can't remember their training well enough to make those adjustments, the training hasn't fulfilled its purpose, regardless of how many people completed it.
What actually works: spaced repetition
The antidote to the forgetting curve is spaced repetition: revisiting information at strategic intervals, each time just before it would otherwise be forgotten.
Ebbinghaus himself identified the principle. Each repetition strengthens the memory trace and extends the interval before the next review is needed. With enough well-timed repetitions, information moves from fragile short-term memory into durable long-term memory.
Instead of one 30-minute annual session, imagine:
Same total time investment. Dramatically different retention. Each touchpoint is tiny, under 3 minutes, but the cumulative effect is transformative. Staff actually remember what they learned because the forgetting curve has been systematically flattened.
Medical education researchers Wollstein and Jabbour (2022) documented this approach in clinical training, finding that spaced repetition with adaptive intervals allowed trainees to achieve equivalent test scores with less total study time than traditional methods. The principle works across domains: finance, aviation, medicine, and yes, accessibility training.
The missing link: relevance
There's another problem with traditional training beyond the forgetting curve. It's abstract.
Staff learn about 'wheelchair users' in general. They watch a video about Deaf awareness in a generic context. But when a specific customer with specific requirements arrives next Tuesday, that generic knowledge doesn't quite fit.
What if training was triggered by actual visits?
When you know James is arriving tomorrow with his powered wheelchair and needs a rest break due to ME/CFS, a 30-second refresher on those specific requirements is worth more than hours of generic training completed six months ago.
This is the principle of just-in-time learning. Information delivered at the moment of need is retained far better than information delivered months in advance of any application. Combine just-in-time delivery with spaced repetition of core concepts, and you get staff who are both broadly knowledgeable and specifically prepared.
Relevance beats volume every time.
What about e-learning platforms?
Many organisations have invested in e-learning platforms. Some are good. Most suffer from the same fundamental problem: they deliver training as a one-off event, track completion rather than competence, and do nothing to combat the forgetting curve.
The issue isn't the platform. It's the model. Any training delivery method that presents information once and then never reinforces it will produce the same result: rapid forgetting.
The key differences that actually affect retention:
**Frequency matters more than duration.** Five 2-minute touchpoints over a month produce better retention than one 30-minute session. The research is clear on this.
**Scenarios beat slides.** Staff remember situations they've thought through more than bullet points they've read. Scenario-based learning forces active recall, which strengthens memory traces.
**Testing beats re-reading.** The 'testing effect' (also called retrieval practice) shows that actively recalling information produces significantly better long-term retention than passively reviewing it. Quizzes aren't just assessment tools; they're learning tools.
**Adaptive intervals beat fixed schedules.** Not everyone forgets at the same rate. A system that adjusts the spacing of reviews based on individual performance (the SM-2 algorithm, developed by Piotr Wozniak in 1987, is one well-validated approach) is more efficient than a one-size-fits-all schedule.
What WelcoMe does differently
WelcoMe's Adaptive Training System is built on these principles:
**Spaced repetition:** Instead of annual modules, staff receive regular micro-touchpoints. Short, frequent, sustainable. Knowledge stays fresh because the forgetting curve is systematically flattened.
**Scenario-based learning:** Staff work through realistic scenarios, not slides. 'A customer arrives with their guide dog and tells you the lighting in your venue is too bright for them. What barriers might they be experiencing, and what can you do?' This forces active recall and builds practical confidence.
**Adaptive intervals:** The system tracks what each staff member knows and adjusts review timing based on their individual retention. Content they've mastered gets spaced further apart. Content they're struggling with comes back sooner.
**Just-in-time relevance:** When a visit is scheduled, staff receive targeted preparation specific to that customer's requirements. Training at the moment it matters most.
The result? Staff who actually remember their training. Staff who feel confident, not awkward. Staff who remove barriers instead of creating them.
The real cost of forgetting
Consider what happens when training fails:
A customer arrives. Staff don't remember what they learned. They default to instinct, which usually means either avoiding the situation or being patronising. The customer has a poor experience. They tell 10 people. Some of them were potential customers too.
Now multiply that across every disabled customer interaction, every day, across every venue. The cost of the forgetting curve isn't just the wasted training budget. It's the ongoing revenue loss from customers who never come back.
75% of disabled people have walked away from a business because of poor accessibility or customer service (We Are Purple, 2020). Staff who can't remember their training are a direct contributor to that statistic.
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Ready for training that actually sticks? Book a demo to see WelcoMe's Adaptive Training System in action.