The Peg System: Memorize Ordered Lists

By the end of this guide you will have a starter set of ten peg words, a worked example that hooks ten items onto them, and a clear sense of when pegs suit a list better than a memory palace. The peg system is a mnemonic for ordered lists. You first learn a fixed set of numbered words, the pegs, and then hang each new item on the peg that matches its position.

Pegs are easy to confuse with the memory palace, because both rely on pictures. The difference is the hook. A palace uses places along a route, while pegs use words tied to numbers. We also say plainly where the sources stop: none of the studies in our verified list tested the peg system itself.

The rest of this guide is locked

Play a round of five cards to open it and collect this guide’s stamp. Or read it now without playing, and skip the stamp.

The round uses cards from the Mnemonic Toolkit deck. Your stamps and progress stay in this browser.

How the peg system works

A peg is a word you already know that is tied to a number, usually by rhyme. There are two stages. In the first, you learn the pegs once, until each number gives you its word without effort. In the second, for every new list, you build one image that joins the item to its peg.

To recall, you run through the numbers and let each peg hand you its image. Because every peg carries its own number, you can ask for item 7 directly, without first reciting items 1 to 6. The same pegs can be reused for the next list.

A starter set of ten pegs

Here is our own starter set. Each word rhymes with its number and gives a clear picture, except seven, which uses a stand-in.

Sun (rhymes with one)
Zoo (rhymes with two)
Sea (rhymes with three)
Floor (rhymes with four)
Hive (rhymes with five)
Bricks (rhymes with six)
Cloud (heaven rhymes with seven, so picture a cloud)
Plate (rhymes with eight)
Vine (rhymes with nine)
Hen (rhymes with ten)

Say the set forward and backward until each number gives its word at once. If a peg does not work for you, replace it with any word that rhymes and that you can picture clearly.

Worked example: ten items for a science fair booth

Say you must pack ten things for a booth, in this order (a made-up list): poster, tape, scissors, laptop, charger, markers, clipboard, index cards, tablecloth, snacks. Each image links the peg to the item and gives the pair an action.

Sun and poster: the sun is pasted onto a giant poster, and the poster is too bright to read.
Zoo and tape: a zookeeper tapes a lion's cage shut with a roll of tape.
Sea and scissors: scissors snip the waves into ribbons.
Floor and laptop: a laptop skates across the floor like a robot vacuum.
Hive and charger: a charger cable is plugged into a beehive, with bees buzzing round the plug.
Bricks and markers: markers draw smiley faces on a wall of bricks.
Cloud and clipboard: a clipboard floats on a cloud, flipping its own pages.
Plate and index cards: a plate is piled high with index cards like pancakes.
Vine and tablecloth: a tablecloth hangs from a vine like a green tent.
Hen and snacks: a hen lays bags of snacks instead of eggs.

To test it, cover the list and ask yourself for number six. If bricks and then markers come to mind, the hook is working. Check a few numbers out of order, then the whole list. The guide to mental imagery explains what makes these pictures easy to recall.

Pegs, palace or story: which one to use

Three ways to hook items to a list
Method	What holds each item	Strong point	Weak point
Peg system	A fixed word tied to a number	A reusable set, and you can ask for item 7 directly	You must learn the pegs first, and reusing them may blur old and new images
Memory palace	A station on a route through a place you know	The hooks already exist in your memory, and you can add rooms	It needs a route, and similar-looking spots can blur
Story method	The previous item in a chain	It needs no prepared hooks at all	If one link breaks, the rest of the chain may go with it

A rough rule: pegs for numbered lists you will meet again and again, a memory palace for longer lists or one-time sequences, and a story chain for a short list when you have no time to prepare. The table and that rule are practical advice, and we did not find a verified study that compares the three.

What the sources say, and how to keep pegs fresh

Because no verified study tests pegs, we offer related background only. In laboratory tests of recognition and free recall, pictures were remembered better than words (Standing, 1973), and pegs depend on pictures. A different hook, the memory palace, was tested when beginners applied it to 10 lists of 11 unrelated words (Legge et al., 2012). Neither study tells you how well pegs work.

Whichever hook you choose, review is the next job. A policy-oriented review says that spacing out repeated encounters with material produces better long-term learning than massed repetition, and that adding tests amplifies the benefits (Kang, 2016). That review did not test pegs, so the next step is our practical reading: recall the list by number from memory, then add cards such as What is item 7? in Practice. Practice brings a card back after a wait of 1, 2, 4, 8 or 16 days, depending on its box, and results vary between people.

Common mistakes

Skipping the step of learning the pegs first. Practice the ten pegs forward and backward until each number gives its word at once. Only then add a list.
Picturing the peg and the item side by side. Make them interact in one action, such as scissors snipping the sea into ribbons.
Reusing the same peg for every list without a break. Let an old list fade, or build a second set of pegs. This tip is practical advice, not a tested result.
Stretching ten pegs over a list of thirty. Use a memory palace for long lists, or extend your peg set ten at a time, and test the new pegs on their own.

Frequently asked questions

What is the peg system?

It is a mnemonic for ordered lists. You learn a fixed set of numbered peg words, such as sun for one and zoo for two, and build an image that joins each list item to the peg for its position.

What is the difference between pegs and a memory palace?

The hook. Pegs are words tied to numbers, and a palace is a set of places on a route. Pegs let you jump to a numbered item, and a palace is easier to extend with new rooms.

Does the peg system work?

We found no verified study that tests it, so we cannot quote a result. Related research found that pictures were remembered better than words in laboratory tests (Standing, 1973). Treat pegs as a tool to try and test on your own list.

How many pegs do I need?

Ten is a sensible start for a first list. You can extend the set later, but learn each new peg on its own before you rely on it. A much longer list may be better served by a memory palace.

Sources

We opened each source below before citing it. See Methodology and Sources for how we check them.

Standing, L. (1973). Learning 10000 pictures. Quarterly Journal of Experimental Psychology, 25(2), 207-222. Open the source
Legge, E. L. G., Madan, C. R., Ng, E. T., & Caplan, J. B. (2012). Building a memory palace in minutes: Equivalent memory performance using virtual versus conventional environments with the Method of Loci. Acta Psychologica, 141(3), 380-390. Open the source
Kang, S. H. K. (2016). Spaced Repetition Promotes Efficient and Effective Learning. Policy Insights from the Behavioral and Brain Sciences, 3(1), 12-19. Open the source

This guide is general study help, not medical or professional advice. It was last reviewed on November 12, 2026. Spot a mistake? Tell us here.