Study Techniques, Ranked by the Evidence
In 2013, Dunlosky and colleagues did something rude: they reviewed hundreds of studies on the ten most common study techniques and ranked them by what the evidence actually supports. The results upset everyone — the techniques students love most (highlighting, rereading) scored lowest, and the ones that feel like work scored highest.
The podium: what actually wins
Practice testing — answering from memory — took the top spot. It works across ages, subjects, and test formats, and it's cheap: a blank page and a question is the whole apparatus.
Distributed practice — spreading study across days — shared the win. Same total hours, dramatically better retention, just by being spread out.
Elaborative interrogation and self-explanation — asking "why is this true" and explaining it back — scored moderate. Powerful but narrower: it needs decent prior knowledge to grab onto.
Interleaved practice — mixing topics — scored moderate-to-promising, strongest in math and problem-solving where the exam won't label the question type.
Why the losers lose
Highlighting and rereading fail for the same reason: they train your eyes, not your memory. Every pass makes the page feel more familiar, and the brain reads familiarity as knowledge. At the exam, the page isn't there — just the question and whatever you can pull up without it.
That's the entire distinction the research keeps drawing: recognition is not retrieval. Study methods that build recognition feel like progress and fail silently. Methods that build retrieval feel like struggle and show up on the exam.
The practical version
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- Exam sprint generator to prioritize what matters.
- Dynamic question generation from your materials.
- Explanations that fix gaps fast (not just answers).