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Glossary

The study terms, explained.

Plain-language definitions of the study methods and AI ideas behind StudyPDF. Each one answers the question first, then shows how Bo puts it to work on your own course.

Active recall

Active recall is a study method where you retrieve information from memory instead of rereading it.

Forgetting curve

The forgetting curve, described by Hermann Ebbinghaus, is the pattern in which memory of new material drops sharply over the hours and days after you learn it, unless you review it. Each well-timed review flattens the curve so the same facts decay more slowly.

Pomodoro Technique

The Pomodoro Technique is a time-management method where you study in focused 25-minute blocks, each followed by a 5-minute break, and take a longer 15 to 30 minute break after four blocks. Each 25-minute block is called one pomodoro.

Blurting method

The blurting method is an active-recall study technique where you read a topic, close all your notes, then write down everything you can remember from memory, and finally check your notes to find and fill the gaps you missed.

Leitner system

The Leitner system is a spaced-repetition method for flashcards that sorts cards into numbered boxes. Cards you answer correctly move up to a box you review less often, while cards you miss drop back to box 1 for daily practice.

Cornell notes

Cornell notes is a note-taking layout that splits each page into three parts: a narrow left cue column, a wide right notes column, and a summary row at the bottom. You take notes on the right, add questions on the left, and write a short summary, so you can later cover the notes and self-test from the cues.

Elaboration

Elaboration is a study technique, often called elaborative interrogation, where you ask how and why a fact is true and connect it to what you already know. This active questioning builds deeper, more durable memory than simply rereading or highlighting.

Dual coding

Dual coding is a learning method where you pair words with visuals like diagrams, sketches, or timelines, so your memory stores the same idea two ways. When recall starts, either route can trigger the other, which makes the memory easier to retrieve.

Metacognition

Metacognition is thinking about your own thinking: the skill of judging what you actually know versus what only feels familiar, so you can aim your study time at the gaps that will cost you marks instead of rereading material you have already learned.

AI hallucination

An AI hallucination is when an AI tool states something false or invented while sounding completely confident, presenting a wrong fact, a fake citation, or a made-up source as if it were true. For students using general chatbots to study, it is the main reason answers can quietly mislead.

Study guide

A study guide is a condensed, structured document that pulls the key concepts, definitions, and likely exam points of a topic into one organized place, so you can review the whole subject from a single source instead of hunting through scattered notes.

Cheat sheet

A cheat sheet is a dense one-page reference that holds the most important formulas, definitions, and facts for a topic. Students build one for open-note exams or use it for a final review pass, keeping only what they tend to forget.

Practice test

A practice test means answering exam-style questions under test-like conditions before the real exam. It is a strong form of retrieval practice, since pulling answers from memory builds durable learning, and it exposes the weak spots you still need to study.

Memory palace

A memory palace (also called the method of loci) is a memory technique where you place facts you want to remember at specific spots along a familiar route or building, then recall them in order by mentally walking that route and picking each item back up.

Mnemonic

A mnemonic is a memory aid that ties hard-to-remember information to something easier to recall, like an acronym, a rhyme, or a vivid mental image. Instead of memorizing raw facts, you link them to a cue your brain holds onto more readily.

Chunking

Chunking is a memory technique where you group separate pieces of information into larger, meaningful units, so your working memory can hold and recall more at once. A phone number is easier to remember as a few blocks than as ten loose digits.

Distributed practice

Distributed practice is the study strategy of spreading your sessions out across days or weeks instead of massing them into one long sitting. The gaps between sessions force your memory to work harder to recall material, and that effort is what builds durable long-term retention.

Desirable difficulty

A desirable difficulty is a study challenge that feels harder in the moment but produces stronger, longer-lasting learning, such as testing yourself instead of rereading or spacing reviews out over time rather than cramming.

Mastery learning

Mastery learning is an approach where you fully learn one topic to a set standard, like 90 percent on a check, before you move on to the next one. Progress is based on whether you actually know the material, not on a fixed weekly schedule.

Concept map

A concept map is a diagram that lays out concepts as boxes and connects them with labeled lines that name the relationship, like "causes", "is part of", or "requires". The labels are the point: they force you to state how two ideas actually relate, not just that they connect.

Spacing effect

The spacing effect is the well-replicated finding that you remember information better when you spread your study across several sessions over time, rather than cramming it all into one sitting. It is the science behind spaced repetition.

Testing effect

The testing effect, also called the retrieval practice effect, is the finding that trying to recall material from memory strengthens long-term retention more than rereading or restudying it for the same amount of time.

Exam blueprint

An exam blueprint is a map of what a test will cover and how it is weighted: which topics appear, how many questions each one gets, and at what difficulty. Students use it to aim revision at the parts that carry the most marks.

Summarizing

Summarizing is the study skill of condensing material into its key points in your own words. It forces you to decide what actually matters and to check that you understood it, because you cannot restate an idea clearly until you have grasped it.

Highlighting

Highlighting is the study habit of marking key words or sentences in a text while reading. On its own it is one of the weakest study methods because it is passive, and it only helps when paired with active methods like self-testing or summarizing.

Cramming

Cramming means studying a big pile of material in one long session right before a test, usually the night before. It can get you through the next day, but you forget most of it fast. Spreading the same hours over several days works far better.

Rote learning

Rote learning means memorizing something by repeating it over and over until it sticks, without really understanding it. It works okay for a small set of facts you just need to recall, but it falls apart the moment you have to apply or explain the idea.

Active reading

Active reading means reading with your brain switched on. You ask questions as you go, guess what comes next, and pull out the main point in your own words, instead of just letting your eyes slide over the page and forgetting it all later.

SQ3R method

The SQ3R method is a five-step way to read a textbook chapter so it actually sticks: Survey, Question, Read, Recite, Review. Instead of reading start to finish, you skim first, turn headings into questions, read to answer them, say the answers out loud, and review.

Note-taking

Note-taking is writing down the important parts of a lecture, reading, or video as you go, in a short form you can study from later. The goal is notes you'll actually reuse, in your own words, not a word-for-word copy of everything.

Zettelkasten

A Zettelkasten is a note system where each note holds one idea written in your own words and links to related notes. Over time those links turn your notes into a connected web you can think with, not just a pile you store and forget.

Self-explanation

Self-explanation is a study habit where you stop and explain to yourself why a step, fact, or answer is actually true, out loud or on paper. It forces you to fill in the reasoning instead of just nodding along, which is where most fake understanding hides.

Worked example

A worked example is a problem shown with its full solution, written out step by step from start to finish. You see exactly how someone gets to the answer, so you can learn the method before you try a similar problem on your own.

Retrieval cue

A retrieval cue is any hint that helps you pull a memory back out of your head, like a keyword, a question, or an image you tied to the fact when you learned it. Good cues make recall a lot easier.

Test anxiety

Test anxiety is the rush of nerves you feel before or during an exam that makes it hard to think clearly, remember what you studied, or work at your normal pace. It is super common, and practising under real exam conditions is one of the best ways to bring it down.

Procrastination

Procrastination is when you put off studying even though you know you should start. It usually isn't laziness. You're dodging a bad feeling the work brings up, like fear of failing or just not knowing where to begin, so you do something easier instead.

Study schedule

A study schedule is a simple plan of what to study and when, spread out over the days or weeks before an exam, so the work is split into small chunks instead of one giant cram session at the end.

Past paper

A past paper is a real exam from a previous year that you work through to practise. It shows you the actual question style, the format, and which topics keep coming up, so you know what to expect before the real thing.

Reading comprehension

Reading comprehension is how well you actually understand what you read, not just whether you got to the end of the page. It means you can follow the meaning, remember the main points, and explain the text in your own words.

Paraphrasing

Paraphrasing means saying something in your own words instead of repeating it word for word. As a study trick, it's a quick test of understanding. If you can rewrite an idea cleanly without copying, you get it. If you get stuck, you just found a gap to fix.

Study group

A study group is a small group of students, usually three to five, who study the same material together by quizzing each other, explaining ideas out loud, and comparing notes so everyone catches what they missed on their own.

Retrieval practice

Retrieval practice means pulling an answer out of your memory instead of rereading it. You test yourself, try to remember, then check. The act of recalling is what actually builds the memory, which is why it beats highlighting or reading notes again.

Concept mastery

Concept mastery is how well you actually know one single idea, measured and tracked over time instead of guessed. It rises when you get that idea right and slips back down when you leave it alone, so your study plan can always see what still needs work.

Cited answer

A cited answer is a reply that links straight back to the exact spot it came from, like a page number or a video timestamp, so you can open the source and check it yourself instead of just taking the answer on faith.

Course-scoped AI

Course-scoped AI is an AI that only works from your own uploaded course material, like your lectures and notes, instead of the whole internet. So its answers match what your class actually teaches, not some random version from the web.

Retrieval-augmented generation (RAG)

Retrieval-augmented generation (RAG) is a way to make an AI answer from a chosen set of documents. It first searches those documents for the relevant bits, then writes the answer using only what it found. This cuts down on made-up facts.

Mock exam

A mock exam is a full practice exam you sit under real conditions, timed and with no notes, before the actual test. The point is to make exam day feel familiar so you stay calm and know what to expect.

Mind map

A mind map is a diagram that puts one main topic in the middle and branches out into related ideas around it. The branches show how everything connects, so a whole subject fits on a single page you can take in at a glance.

Flashcard

A flashcard is a small card with a question on one side and the answer on the other. You look at the question, try to remember the answer, then flip the card to check. It is one of the simplest and best ways to drill facts into memory.

Study motivation

Study motivation is the drive that gets you to actually sit down and study. The catch is that it usually shows up after you start, not before, so the real trick is making the first step small enough to take.

Study burnout

Study burnout is the worn-out, flat state you hit after pushing hard at studying for too long with too little rest. You feel drained, you can't focus, and nothing seems to stick. More grinding makes it worse. Rest and pacing are what actually pull you out.

Learning styles

Learning styles is the popular idea that each person learns best in one fixed way, like being a "visual" or "auditory" learner, and that lessons should match that type. Big research reviews looked for proof and could not find it.

Bloom's taxonomy

Bloom's taxonomy is a ladder of six thinking levels that go from simple to hard: remember, understand, apply, analyze, evaluate, and create. It helps you see whether a question wants you to recall a fact or actually work with the idea.

Formative assessment

Formative assessment is a quick, low-stakes check you do while you're still learning, like a practice question or a short quiz. It shows you what you've got and what you haven't yet, so you can fix the gaps before the real test. It's not for a final grade.

Summative assessment

Summative assessment is the graded test at the end of a unit or course that measures how much you actually learned. Think final exam, big essay, or end-of-term project. It counts toward your grade, unlike the small check-ins you get along the way.

Working memory

Working memory is the small mental scratchpad that holds what you are thinking about right now. It only fits a few things at once, and it clears out fast, so big piles of new information overflow it before you can really use them.

Spaced repetition

Spaced repetition is a study method where you review material at growing gaps in time, just before you would forget it. Each review pushes the next one further out, so the facts move into long-term memory instead of fading away after a day.

Feynman technique

The Feynman technique is a study method where you explain a topic in plain words, like you're teaching a kid. Every spot where you get stuck or go vague shows you exactly what you don't really understand yet, so you can go fix it.

Interleaving

Interleaving means mixing different topics or problem types in one study session instead of grinding through one type at a time. It feels harder while you do it, but it trains your brain to spot which kind of problem you're actually facing.

Study agent

A study agent is an AI that does your study work for you. It does not just answer questions. It turns your material into flashcards and quizzes, keeps track of what you keep getting wrong, and tests you on it so you actually learn.

Anki export

Anki export means saving your flashcards as an .apkg file, the format Anki can open. Anki is a popular free app for spaced repetition, the study method that shows each card right before you forget it. Import the file and study on any device.

Long-term memory

Long-term memory is the part of your mind that holds knowledge for days, months, or years. Things land there when you come back to them again and again over time, not when you read them once. It's where stuff you actually know lives.

Open-book exam

An open-book exam is a test where you are allowed to use your notes, textbook, or other materials while you answer. It sounds easy, but the questions usually test whether you understand and can apply the material, not just whether you can find it.

All-nighter

An all-nighter is when you stay up the whole night studying right before a test instead of sleeping. People do it to cram more in, but it usually backfires, because going without sleep wipes out a lot of what you just learned and leaves you foggy.

Revision

Revision is the British word for going back over what you've already learned so it sticks for an exam. Done right it's active: you test yourself and try to recall things from memory, not just reread your notes again and again.

Study break

A study break is a short rest you take between blocks of studying. The point is to recharge your focus so the next block goes better. Real breaks like moving around or looking away from screens help. Scrolling your phone mostly does not.

Time management

Time management is deciding what to work on and when, so the important things actually get done instead of slipping. For studying, it means setting aside time blocks, sorting tasks by what matters most, and not letting small jobs swallow your whole day.

Essay exam

An essay exam is a test where you write long, written answers instead of picking from options. It rewards a clear structure and a solid argument, not just remembering facts. You read each question, build a case, and back it up.

Memory consolidation

Memory consolidation is how a fresh, shaky memory turns into a stable one your brain can keep. It happens quietly after you learn something, mostly while you sleep, when the brain replays what you studied and locks it in so it lasts.

Multiple choice questions

Multiple choice questions are test questions where you read a prompt and pick the right answer from a list of options. The wrong options are called distractors, and they are written to look correct. Good prep means knowing why each wrong one is wrong.

Active learning

Active learning means you do something with the material instead of just reading or listening. You quiz yourself, explain ideas out loud, or solve problems. Your brain has to pull the answer out, and that effort is what makes it stick.

Passive learning

Passive learning is taking information in without doing much with it, like rereading your notes or watching a lecture without pausing. It feels productive, but it builds a sense of "I've seen this" instead of real memory, so it sticks poorly when you need it later.

Generation effect

The generation effect is the way you remember something better when you come up with the answer yourself instead of just reading it. The act of producing it from your own head makes the memory stick harder than passively taking it in.

Pretesting

Pretesting is when you test yourself on material before you have studied it. You guess the answers, get most of them wrong, and that guessing primes your brain so the real answers stick better once you actually learn them.

Overlearning

Overlearning means you keep practicing a skill even after you can already do it right, so it turns automatic and holds up when you are stressed or short on time.

Deliberate practice

Deliberate practice means working on the exact things you keep getting wrong, with feedback, instead of redoing what you already know. You pick a weak spot, push at it, find out what went wrong, and fix it. It is how experts actually get good.

Memory encoding

Memory encoding is the first step of memory, where your brain turns what you see or hear into a form it can store. The stronger you encode something, by adding meaning or pictures to it, the easier it is to recall later.

Primacy effect

The primacy effect is the tendency to remember the first things in a list or session better than the ones in the middle. The start sticks because your brain has more time and focus to lock it in before the rest piles up.

Recency effect

The recency effect is the way you remember the last few things in a list best, because they are still fresh in your short-term memory when you try to recall them. It is the partner of the primacy effect, which boosts the first few items.

Serial position effect

The serial position effect is the way you remember the items at the start and the end of a list better than the ones in the middle. So if you study a long list of facts, the stuff in the middle tends to slip away first.

Context-dependent memory

Context-dependent memory is the way you recall things better when you are in the same place or setting where you first learned them. Your brain ties what you study to the room, sounds, and smells around you, and those cues help bring the memory back.

Growth mindset

Growth mindset is the belief that you can get smarter with effort and practice, instead of thinking your ability is fixed and can't change. It shapes how you deal with hard material and mistakes.

Cognitive load

Cognitive load is how much your working memory is holding at one moment. Your working memory can only juggle a few things at once, so when you pile on too much, nothing sticks. The fix is to break hard material into smaller pieces.

Scaffolding

Scaffolding is help that lets you do something you can't do alone yet, then gets taken away bit by bit as you get better. You start with worked examples and lots of support, and end up solving problems on your own.

Transfer of learning

Transfer of learning is when you take something you learned in one place and use it to solve a new, different problem somewhere else. It is the real point of studying. Not just passing one test, but being able to use what you know later.

Flow state

Flow state is when you get so caught up in studying that time flies and focusing feels easy. It usually happens when the work is hard enough to hold your attention but still doable, and nothing is pulling you away.

Image occlusion

Image occlusion is a study method where you cover the labels on a diagram and recall each one from memory. Instead of rereading a labeled picture, you hide the parts and quiz yourself, which turns any anatomy slide, map, or chart into active recall practice.

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