Most people learn the same way they were taught in school: read the material, highlight the important bits, re-read your highlights before the test. It feels productive. Your book is full of colour. You've sat with the content for hours. And yet, a week later, most of it is gone.
The reason is simple: these techniques feel like learning because they're familiar, but they don't produce lasting memory. Cognitive science has known this for decades. The question is why mainstream education still ignores it — and what you can do about it.
The forgetting curve is real
Hermann Ebbinghaus mapped the forgetting curve in the 1880s. Without reinforcement, you forget roughly 50% of new information within an hour, 70% within a day, and 90% within a week. This isn't a deficiency — it's your brain doing exactly what it's supposed to. Memory consolidation is metabolically expensive. Your brain deprioritises information it doesn't think you need.
The implication: the timing of practice matters as much as the amount. Spacing your study sessions — revisiting material just as you're about to forget it — forces your brain to reconstruct the memory, which strengthens the neural pathway each time.
What the research actually recommends
- Spaced repetition: Revisit material at increasing intervals (1 day, 3 days, 1 week, 2 weeks). Tools like Anki automate this.
- Active recall: Close the book and try to retrieve what you just learned. The struggle is the point — generation effect means that effortful retrieval strengthens memory far more than passive re-reading.
- Interleaving: Mix different topics or problem types in a single session rather than blocking one topic per session. It feels harder and slower, but produces better long-term retention.
- The Feynman technique: Try to explain the concept in simple language as if teaching it to someone who knows nothing. Gaps in your explanation reveal gaps in your understanding.
- Elaborative interrogation: Ask 'why does this work?' and 'how does this connect to what I already know?' Connecting new information to existing knowledge creates more retrieval pathways.
The myth of learning styles
You've probably heard that you're a visual, auditory, or kinaesthetic learner. This is one of the most persistent myths in education. Dozens of studies have found no evidence that matching instruction to a person's preferred 'learning style' improves outcomes. What does work — for almost everyone — is varied presentation: diagrams and text and spoken explanation and hands-on practice. The more modalities, the more retrieval routes.
Key insight
The techniques that feel most effective — re-reading, highlighting, summarising — consistently underperform in controlled studies. The techniques that feel hardest — recall, spacing, interleaving — consistently produce the best long-term retention. Lean into the difficulty.
What this means for your Edquis courses
Every Edquis course is structured with these principles in mind. Lectures are deliberately concise so you can space them out. Review prompts appear at the end of each section. Project work forces you to apply concepts rather than just receive them.
But the biggest lever is in your hands. Don't watch a lecture and immediately move on. Close your laptop. Write down everything you remember without looking. Check what you missed. Come back to the hardest concepts tomorrow. That cycle — retrieval, check, space, repeat — is how skills become permanent.
James Okafor
Head of Curriculum, Edquis