The Science
Why our brains forget — and how to stop it
The spacing effect, retrieval practice, and the cognitive psychology behind Vocabingo.
Memory is not a hard drive
Unlike a popular misconception, human memory does not archive information permanently. Every memory is reconstructed on each retrieval — and that reconstruction itself strengthens the memory trace. This is the mechanism Vocabingo systematically exploits.
The testing effect (retrieval practice)
Decades of cognitive psychology research show that testing yourself is far more effective than re-reading. Every time you type a word's translation, you activate active retrieval that durably consolidates the memory. Vocabingo is built around this principle: no passive display, always an active response.
Interleaving and variety
Mixing words from different levels and sessions (interleaving) improves long-term retention, even if it feels harder in the moment. Vocabingo intentionally mixes new words and reviews to maximise this effect.
The science behind 10 words a day
Human working memory can process approximately 7 ± 2 new items at a time. By capping daily learning at 10 words, Vocabingo stays within the optimal learning zone — enough to progress, not so much as to saturate.
A solid scientific foundation
Spaced repetition is one of the best-documented learning techniques in psychology. Researchers like Ebbinghaus, Baddeley, Roediger and Karpicke have all contributed to understanding how we remember — and Vocabingo translates these findings into concrete features.
Questions about the science of memory
Is spaced repetition scientifically proven?
Yes. It's one of the most robustly validated learning techniques in cognitive psychology research, with hundreds of published studies since the 1970s.
Why learn 10 words and not 50?
Research shows that massed practice produces an illusion of short-term mastery but poor retention. 10 well-spaced words outperform 50 words learned in a single session.
How long does a session need to be to be effective?
Most users complete their daily session in 5 to 15 minutes. Consistency matters more than duration.