Short answer: Spaced repetition means reviewing a fact just as you are about to forget it, then waiting longer before the next review. Research suggests spread-out practice gives better long-term memory than cramming the same total time. It works best for facts such as doses, values and criteria, not for clinical reasoning.
Why we forget so fast
In the 1880s Hermann Ebbinghaus memorised lists of nonsense syllables and tested himself at different delays. His results gave us the forgetting curve: a steep drop soon after learning, then a slower decline. A careful replication by Murre and Dros in 2015 found a similar shape, although it was one person and the exact numbers are not something to quote as a rule.
The practical point is simple. A fact you read on Monday is much weaker by Friday unless something brings it back. For a licensing exam with hundreds of small facts, that weakening is the main enemy, more than difficulty.
What spacing changes
If you meet a fact five times in one evening, you feel fluent because it is still in short-term memory. If you meet it five times across five weeks, each visit feels harder, because some forgetting has happened. That small struggle is the useful part. Retrieving something that has partly faded strengthens it more than re-reading something that is still fresh.
A large review by Cepeda and colleagues (2006) pooled hundreds of experiments and found that spreading practice out generally beat massing it. They also found that the best gap depends on how long you need to remember: the longer the target, the longer the useful gap. Evidence that gaps should always expand, rather than stay equal, is mixed, so do not worry about perfect intervals.
A schedule you can adapt
Here is a common starting pattern for a new fact. Treat it as an example, not a law.
- Learn it, then test yourself once the same day.
- Review the next day.
- Review three days later.
- Review a week later.
- Review two weeks later, then monthly until the exam.
What to do when you get a card wrong
A miss should bring the card back soon, the same day if you can, and reset its gap to short. A miss is information: the fact was not yet stable. Do not scold yourself and do not make the card longer. If you keep missing it, the card is usually badly written, or you are trying to memorise something you do not yet understand. Go to the explanation, fix the understanding, then simplify the card.
Which exam facts suit spacing
Spaced review pays off for material that is discrete and easy to lose under pressure. Examples that fit well: antidotes and reversal agents, normal ranges, the steps of a protocol, the criteria for a scoring system, drug classes and their key adverse effects, and isolation precautions. It pays off less for skills like reading an ECG strip or choosing between two reasonable management plans. Those need worked cases and practice questions, not cards.
Fitting it into your exam countdown
With ten weeks, start cards in week one and keep the daily review small. By the final month you will have a deck of well-spaced material that takes 20 to 30 minutes a day. With three weeks, be more selective: cards for the topics you keep missing in questions, plus the short list of must-know facts. Spacing still helps over three weeks, but you have fewer reviews per card, so each card needs to earn its place.
If you are working out your own plan, the ten-week DHA plan and the EMREE 12-week plan show where daily card review sits next to question practice.
Four common mistakes
Most trouble with spaced repetition comes from a handful of habits, and all of them are fixable.
- Adding too many cards in the first week. The reviews arrive later, all at once, and the deck becomes a chore. Start small.
- Marking a card as known when you only recognised the answer. If you could not have said it before you flipped the card, it was not known.
- Skipping days and then trying to clear a huge queue in one sitting. Ten minutes a day beats a two-hour rescue on Sunday.
- Putting understanding on cards. A card that asks “why does this happen?” often has a long, unstable answer. Study the reasoning in your notes and questions, then make a card for the single fact that remains.
A worked example: ten cards across two weeks
Suppose you add ten cards on a Monday: five antidotes and five normal values. You review them that evening and get seven right. The three you missed come back within the hour and you get two of them. On Tuesday you review all ten again, and nine are right. The card you keep missing, say the reversal agent for a particular drug, is a candidate for a clearer wording or a memory hook.
By Friday, the cards you have answered correctly twice are due again. On the following Monday, the first batch is due after a longer gap. If you answer them correctly, they move out to roughly two weeks. In the end, a card that you keep answering correctly appears every few weeks, and the ones that give you trouble stay close. The total effort for ten cards across a month might be a few minutes in all. That is the appeal: small, regular reviews instead of one big revision session the week before the exam.
The numbers are only an illustration. Your own gaps will depend on the card and on how well you understood the fact when you made it.
How spacing fits the structure of the exam
Licensing exams are cumulative. A question in week ten may need a fact from week one, and the exam day itself comes after weeks of gaps. A system that revisits old material before you lose it matches that structure well. It also takes the pressure off the final fortnight, because the facts you need most should already have been seen many times. In the last weeks you can spend your effort on mock exams and on the topics that questions have shown to be weak, rather than on re-learning what you studied in the first month.
Doubts people raise
“Will I not just memorise cards and fail the questions?” You might, if your cards are the only thing you do. Cards hold facts and questions test whether you can use them, so you need both. A candidate who reviews antidote cards and also works through emergency scenarios is practising two different skills.
“I prefer to read.” Reading is fine for a first pass. The trouble comes when reading is the only pass. A short review that asks you to produce the answer is a better use of the second and third encounters.
Tools and effort
You can use paper boxes, a general flashcard app or a platform built for your exam. What matters is that the schedule runs without you having to plan it, and that you open it daily. If you use Meddex, the flashcards are scheduled for you; the post on how Meddex flashcards work explains what happens behind the screen.
One honest limit: spaced repetition improves memory for what you put in. It does not tell you what is important. Your question results, covered in how to review mistakes, are the best guide to which facts deserve a card.
Related guide
For a short practical guide for clinicians, see spaced repetition for clinicians.
Frequently asked questions
This article is general educational guidance, not official advice. Exam rules, fees and timelines are set by the Dubai Health Authority and the test provider and can change, so always confirm the latest details on their official channels.
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