How to study from your own notes before an exam

Rereading feels good for the wrong reasons

The week before an exam, most of us open our notes and read them again from the top. It's calm, it feels thorough, and every page looks familiar by the second pass. That familiarity is the trap. Recognizing a page is not the same as being able to produce what's on it in an exam hall.

In 2013, a team of psychologists reviewed ten common study techniques for the journal Psychological Science in the Public Interest. They rated rereading, highlighting and summarization as low utility, and gave the highest ratings to two techniques: practice testing and distributed practice (Dunlosky et al., 2013). Their advice is blunt: use practice testing instead of rereading.

One classic experiment shows why the difference is easy to miss. Students who restudied a text did better on a test five minutes later. On tests two days and one week later, the students who had been tested on the text remembered much more, even though restudying had made the other group more confident (Roediger & Karpicke, 2006). In the authors' words, testing is a way of improving learning, not just assessing it.

Turn each lecture into questions

Your notes already contain the answers. What they usually lack is the questions. Spend ten minutes per lecture turning the page into a short quiz:

1. 1Read one section of the note and write a question it answers. "What do the valves in the heart do?" works better than "heart valves".
2. 2Prefer questions that make you explain or compare, not just name. "How is the pulmonary circuit different from the systemic circuit?" is harder and more useful than "What is the pulmonary circuit?"
3. 3Put the questions on a separate page or at the top of the note, so you can see them without seeing the answers.
4. 4Mark the source next to each question ("Lecture 3", "Lab 2"), so you can check yourself quickly later.

This kind of retrieval practice holds up even against more elaborate techniques. In one study in Science, students who practised recalling a text learned more than students who built detailed concept maps of it, including on questions that asked them to draw inferences (Karpicke & Blunt, 2011). Washington University's teaching centre has a readable summary of the research (WashU CTL).

Recall first, then look

The order matters. Answer the question from memory before you check the note, even if your answer is a half-remembered mess. The effort of pulling it out is the part that helps.

A simple way to do this for a whole topic is a blank-page recall. Take one lecture, close the notes, and write down everything you remember on a blank page for five minutes. Then open the note and compare. Whatever is in the note but not on your page is exactly what to study next. Oregon State University's study guide recommends the same habit, and notes that self-testing beats passive review such as looking over your notes (OSU Academic Success Center).

Space it out instead of cramming

Distributed practice means spreading the same amount of study across several sessions instead of one long one. A large review of spacing experiments found that the most effective gap between sessions grows with how long you need to remember the material (Cepeda et al., 2006). For an exam, the practical version is to start earlier and come back to each topic more than once.

For an exam a week away, that might look like this:

• Day one: write questions for every lecture and do a first recall pass.
• A couple of days later: answer all the questions again from memory, and spend your time on the ones you missed.
• The day before: one last pass on the questions you still find hard, and nothing new.

The exact days matter less than the pattern: several short rounds of recall, with gaps in between.

Explain it in your own words

Two techniques rated as moderate utility in the same 2013 review are worth adding once the basics are in place (Dunlosky et al., 2013). Self-explanation means explaining to yourself how a new idea connects to what you already know, or why each step of a solution follows. Elaborative interrogation means asking "why is this true?" about the facts in your notes and trying to answer.

Both work well out loud. Explain a topic to a friend, or to an empty room, without looking at your notes. Where you get stuck is your next question.

Where an AI notes app fits

An AI tool can make studying worse if it does the recall for you: you read a fluent answer, it feels familiar, and you're back to rereading. It can help if you use it to check your recall against your own material.

That's how we'd suggest using Lumyo: pick the notes for one course, try to answer a question from memory first, then ask and compare. Each answer cites the notes it used, and tapping a source opens the exact line, so you can see where your version and your notes differ. Whatever tool you use, check its answer against the source before you trust it.