Mind maps and concept maps: when a map teaches and when it is colouring, with one map built from a chapter

A concept map is a diagram of ideas joined by labelled arrows, so that each arrow reads as a sentence: "insulin lowers blood glucose." A mind map is a tree of words radiating from one centre, usually without labels on the branches. Both can teach, and both can be an hour of colouring that leaves nothing behind. The difference is not the shape. It is whether you drew the map with the book open or from memory, and whether you tested it by drawing it again. Here is the research, the one rule, and a map built from a biology chapter.

Concept map vs mind map: what each is

The concept map was defined by Joseph Novak and his colleagues at Cornell in the 1970s and 1980s. Concepts go in boxes. Arrows join the boxes, and every arrow carries a linking word or phrase, so that box, arrow and box together make a statement: "a receptor detects a stimulus." Novak called each of these a proposition, and a concept map is a set of propositions you can read off one by one. The map runs from the most general idea at the top to the most specific at the bottom, and the best maps have cross-links: arrows between branches that would otherwise not touch.

A mind map is simpler. One idea sits in the centre. Branches radiate from it, each carrying a single word or short phrase, and smaller branches grow from those. Colour and small pictures are part of the method. The technique was popularised and trademarked by a British author in the 1970s; this page names techniques, not creators.

	Concept map	Mind map
Shape	Boxes and arrows, general at the top, specific below	One centre, branches radiating out
Labels	A verb or phrase on every arrow, so each arrow is a sentence	Usually none; single words on the branches
Best for	A chapter whose ideas connect in many directions: a feedback loop, a reaction mechanism, the causes of a war	A fast blurt of everything you know about one topic
Weakness	Slow to draw; past twenty concepts it becomes a poster	A map of nouns with no verbs tests nothing

The mapping method of lecture notes is a cousin of both; the note-taking methods compared shows it beside the other four on one chemistry lecture. This page is about a map built after the lecture, from a chapter, as a study method.

What the research found

Three findings, and together they point at one rule.

First, maps help, on average. Nesbit and Adesope (2006) pooled dozens of studies in which students learned with concept maps or knowledge maps. Studying a map that someone else had made beat studying the same material as text, a list or an outline, and building a map yourself did better again. Schroeder and colleagues (2018) updated that review with more than twice as many comparisons and found the same shape: learning with maps beat the usual alternatives, and constructing a map beat studying one that was handed to you.

Second, and this is the finding most pages leave out, maps lose to plain recall when the book is open. Karpicke and Blunt (2011) had students study a science passage and then either build a concept map of it with the text in front of them or put the text away and write down everything they could remember. A week later, the students who had practised recall remembered more: in the first experiment about two thirds of the ideas, against under half for the concept-mapping group. Asked to predict which method would work better, most students had picked the maps. Elaboration with the book open feels like learning and loses to recall.

Third, the mind-map evidence is thin. Farrand, Hussain and Hennessy (2002) ran a small trial with 50 medical students, half taught to mind-map a passage and half using whatever method they preferred. Recall improved in both groups straight after study; a week later the gain held up only in the mind-map group. But the mind-map group was less motivated to use their method, and the authors estimated that with equal motivation the mind maps would have given about a 15 per cent improvement. One study, with one text, and a method the students did not want to keep.

Where does that leave the student? A map is a form of elaboration: it makes you say how ideas relate. Elaboration helps. But elaboration with the source in view loses to pulling the ideas out of your own head. Both halves are true, and the rule that follows is the next section. A map is also words and a picture together, which is one of the reasons it helps at all: words and pictures stored twice is the dual-coding idea in one paragraph on the memory-techniques page.

The one rule: build it from memory, then check

Close the chapter. Draw what you know. Then open the chapter and add what you missed in a second colour.

That is the whole rule, and it turns the Karpicke and Blunt result around. The map drawn from a closed book is retrieval practice that happens to leave a diagram behind. The second colour is tonight's list: every box and arrow in it is an idea you did not have. A map copied from the headings with the book open is a copy, and a copy is the method that lost. Testing yourself, step by step has the honest-marking rules; a map is marked the same way, arrow by arrow.

Chapter 3 of the free playbook has this rule on one page.

How to make a concept map in five steps

About 20 minutes for one chapter, plus the check.

1. Write a focus question at the top. The question the chapter answers: "How does the body hold a variable steady?" A map without a question sprawls.
2. List 10 to 15 concepts from memory. Nouns, one or two words each. Do not open the book yet. If you can only think of six, that is a finding.
3. Rank them from general to specific. The broadest idea goes at the top, the examples at the bottom.
4. Draw the boxes and join them, with a verb on every arrow. Read each arrow aloud as a sentence. If you cannot say the sentence, you do not know the link.
5. Look for cross-links between branches. An arrow from one branch to another is where understanding shows, because the chapter's headings did not give it to you.

Then the check: open the book and add every missing concept and every missing or wrong arrow in a second colour. Count them. A few days later, redraw the whole map from a blank page and count again; the spacing schedule says how long to wait.

Worked example: one map from a biology chapter

A Grade 12 biology (SBI4U) student is studying homeostasis and negative feedback, the idea that opens the course's homeostasis unit on the SBI4U course map. No images on this page, so the map is written as an outline of its propositions, which is also how to check one.

Focus question: How does a feedback loop hold a variable at its set point?

Concepts from memory (12): set point, stimulus, receptor, control centre, effector, response, negative feedback, positive feedback, body temperature, blood glucose, insulin, glucagon.

Propositions, as drawn (14 arrows):

• A stimulus is detected by a receptor.
• The receptor signals the control centre.
• The control centre compares the input with the set point.
• The control centre activates an effector.
• The effector produces a response.
• The response reduces the stimulus. (This arrow, from response back to stimulus, is the negative feedback.)
• Insulin lowers blood glucose.
• Glucagon raises blood glucose.
• Both insulin and glucagon are released by the pancreas.
• Body temperature is held near 37 °C.
• Sweating and shivering are effector responses.
• Positive feedback amplifies the stimulus instead of reducing it.
• Blood clotting is an example of positive feedback.
• A loop with no receptor cannot correct.

Two cross-links are in that list: insulin and glucagon connect the glucose branch to the general loop as effector responses, and positive feedback connects back to the stimulus box with the opposite verb. The student checks each proposition against the course text and finds all fourteen true, which is the first-night result.

The redraw, the next evening, from a blank page: 11 of 14 arrows reproduced. The three missing were the pancreas as the source of both hormones, positive feedback amplifying the stimulus, and clotting as the example of it. Those three are the list for the night after, and they are the kind of fact a redraw finds and a reread hides. Redraw the diagram from memory is the same move for a science figure.

When a map teaches, and when it is colouring

A map teaches when the chapter is a web of linked ideas (biology, history, chemistry theory), when it is built from memory, and when it is redrawn later. Those three conditions, together.

A map is colouring when it is the headings copied into bubbles, when an hour goes on the images and the colours, when it is drawn once and never again, or when the thing being mapped is a procedure. A derivative rule is not a web of ideas; it is a sequence of steps, and a procedure is a worked example, not a map.

Where does the mind map fit? As a five-minute blurt before you study a topic: one word in the centre, everything you already know around it, no colours, no care. It tells you where you are starting from. As a study method on its own, the evidence above is one small trial and a motivation problem.

The mistakes

• The book open while you draw. That is the method that lost to recall.
• No verbs on the arrows. A map of nouns joined by lines tests nothing, because you can draw it without knowing how anything relates.
• Too many concepts. Past twenty the map is a poster. Split the chapter.
• One map, never redrawn. The first map is the diagnostic; the redraw is the learning.
• Mapping instead of practising problems. In a course with calculations, the map is for the theory chapter and the problems are for everything else.

The method on one page

• Concept map: boxes, labelled arrows, general to specific, cross-links. Mind map: one centre, branches, single words.
• The research: maps help; maps built with the book open lose to plain recall; mind maps have one small trial behind them.
• The one rule: close the book, draw what you know, open the book, add what you missed in a second colour.
• Five steps: focus question, 10 to 15 concepts from memory, general to specific, a verb on every arrow, cross-links.
• Redraw it from blank a few days later and count the arrows.

Where YSR Studies does the bookkeeping

On paper, the second colour is yours to keep and the redraw date is yours to remember. In YSR Studies the course map shows each idea as Learned, Shaky or Not shown yet, which is the second colour kept for you across the whole course; a card's answer stays on the server until you have tried it; the schedule is FSRS at a desired retention of 0.9, which is when the redraw comes round; and a recording, a video link, a photo or a PDF becomes notes and cards. Five free hours every month.