A Glossary of Study Terms

A lot of the advice around "how to study better" leans on a handful of learning-science terms without ever explaining them. Here's what they actually mean, in plain language, with no jargon left standing.

Active recall

Pulling an answer out of your own memory instead of just looking at it again. Quizzing yourself is active recall. Rereading a highlighted paragraph is not, even though it feels like studying. See our full piece on active recall for kids.

Spaced repetition (the spacing effect)

Reviewing the same material a few times over several days sticks better than reviewing it the same number of times in one sitting. The gaps between reviews are doing real work, not wasting time.

The testing effect

The act of taking a quiz or test, even an ungraded one, strengthens memory more than spending the same amount of time re-reading the material. It's the research basis for why quizzing yourself beats highlighting.

Retrieval practice

The general term for any activity where you try to recall information from memory rather than looking it up: flashcards, practice questions, or explaining a topic out loud from memory.

Dual coding

Pairing words with a visual, like a diagram or a photo of the actual page, gives your brain two different paths back to the same information. That's why studying from a page with a labeled diagram often works better than studying from a typed-out summary of it.

Interleaving

Mixing different topics or problem types in one study session instead of drilling one thing until it's "done," then moving to the next. It feels harder in the moment, which is usually a sign it's working.

Desirable difficulty

Some amount of struggle during studying actually improves how well material is remembered later. Effortless review that feels smooth in the moment often doesn't hold up on the actual test.

Cramming

Concentrating most or all of your studying into one long session right before a test. It can boost short-term recall for the next day, but it's the opposite of spaced repetition and tends to fade fast.

The forgetting curve

The idea that memory of newly learned material drops off quickly at first and then levels out, unless it gets reviewed. Each review flattens the curve a bit more, which is the whole logic behind spacing reviews out.

Metacognition

Being aware of what you actually know versus what just feels familiar. It's why rereading feels like it's working (the material feels familiar) even when a quiz on the same material reveals big gaps.

Low-stakes testing

Practice quizzes that don't count toward a grade. They give most of the memory benefit of a real test without the pressure, which is also why they're easier to do more often. More in our piece on test anxiety.

Working memory

The small amount of information you can actively hold and juggle in your head at once, separate from long-term memory. Tasks that eat up working memory, like translating a sentence in your head, leave less room for actually learning the content in it.

Elaboration

Explaining an idea in your own words, or connecting it to something you already know, instead of memorizing it as a standalone fact. It tends to produce deeper, longer-lasting recall than repetition alone.

Formative vs. summative assessment

A formative assessment (a practice quiz, a warm-up question) checks understanding along the way and doesn't count toward a grade. A summative assessment (a final exam, a graded test) measures what was learned at the end. Good review routines lean heavily on the formative kind.

Most of these ideas point at the same underlying pattern: information you actively pull from memory, more than once, spaced out over time, sticks. That's the whole mechanism behind turning a photographed page into quiz cards instead of just rereading it.