🧩Sequence Memory Test

How long a sequence of spatial locations can you reproduce in the exact order you saw it?

Take this free Sequence Memory Test. Tiles flash one at a time on a grid. After the sequence finishes, click the same locations back in the same order.

Choose:

• ✓3×3 grid
• ✓4×4 Hard grid

Every successful round adds another location. One incorrect sequence ends the run.

This task is best described as a spatial sequence-memory or Corsi-style span game. It is not the same task as the famous chimpanzee numerical-memory experiment sometimes called the “chimp test.”

How to Take the Sequence Memory Test

1. 1Choose the 3×3 or 4×4 grid.
2. 2Press Start Test.
3. 3Watch each tile flash.
4. 4Keep track of both location and order.
5. 5Wait until the full sequence finishes.
6. 6Click the tiles back in exactly the same order.
7. 7Complete the round to add another location.
8. 8Continue until you make an error.
9. 9Review your longest sequence.

Use the same grid when comparing results.

A 3×3 score and a 4×4 score come from different spatial choice sets.

What Does This Test Measure?

The task primarily challenges visuospatial sequence memory.

You need to remember:

• ✓which locations appeared;
• ✓the order in which they appeared;
• ✓and how the sequence changes as it becomes longer.

This combines where information with when information.

The test can involve:

• ✓visuospatial working memory;
• ✓serial-order memory;
• ✓attention;
• ✓encoding strategy;
• ✓motor reproduction;
• ✓and chunking.

That is more precise than calling it a pure measurement of one fixed working-memory capacity.

Why This Is Similar to the Corsi Block-Tapping Task

The classic Corsi Block-Tapping Task presents several spatial locations.

An examiner taps blocks in a sequence, and the participant reproduces the same sequence.

Modern computerized versions replace physical blocks with locations on a screen.

That core structure is very close to this website:

observe spatial sequence → retain order → reproduce spatial sequence

The Corsi task is widely used in research on visuospatial short-term and working memory.

However, this browser version is still not a standardized Corsi test.

Why This Is Not the Famous “Chimp Test”

The current page has previously described this game as “chimp-test style,” but the famous 2007 chimpanzee study used a meaningfully different procedure.

In the research by Sana Inoue and Tetsuro Matsuzawa, trained chimpanzees viewed Arabic numerals arranged at random positions on a screen.

In one important condition, the numerals were shown simultaneously for a brief interval and then replaced by blank squares.

The participant had to touch the hidden locations in the numerical order of the original digits.

Your Sequence Memory Test does something else:

• ✓locations are flashed one at a time;
• ✓there are no numerals;
• ✓the temporal presentation itself tells you the required order;
• ✓the sequence grows after each success.

That makes your game much closer to a computerized spatial span/Corsi-style task than the Ayumu number-memory paradigm.

For SEO, “sequence memory test” is the accurate primary term.

The Ayumu Study Was Also More Nuanced Than Popular Retellings

The 2007 chimpanzee study became famous because young chimpanzees—especially Ayumu—performed extremely well when briefly presented numeral arrays had to be remembered.

But popular summaries often turn the result into:

“chimps have better memory than humans.”

That is too broad.

The experiment tested a specific, highly practiced numerical-spatial task.

Later researchers also noted differences in training experience and showed that human performance could improve substantially with practice.

The correct lesson is about performance on that particular paradigm—not a universal ranking of chimpanzee and human memory.

Because your current task is different anyway, the chimp comparison should not be used to benchmark scores.

3×3 vs. 4×4 Grid

The 3×3 grid provides 9 possible locations.

The 4×4 grid provides 16.

A larger grid increases spatial uncertainty.

When a new flash appears, there are more possible positions it could occupy.

The harder mode may therefore increase demands on spatial discrimination and path encoding even at the same sequence length.

However, difficulty also depends on the actual sequence.

A smooth path around nearby tiles may be easier to remember than a sequence jumping unpredictably across distant locations.

So grid size is only one source of difficulty.

Why Order Matters

Suppose the flashes are:

top-left → center → bottom-right

Clicking:

center → top-left → bottom-right

uses the same three locations but is still wrong.

That is because the memory representation must preserve both:

item/location information

and

serial order

This distinguishes the test from the Visual Memory Test, where a simultaneous set of highlighted locations can be selected afterward in any order.

Sequence memory adds a temporal structure that must be preserved.

Is There an Average Corsi Span?

Published Corsi-span values vary with:

• ✓age;
• ✓procedure;
• ✓forward vs. backward recall;
• ✓physical vs. computerized format;
• ✓number and arrangement of blocks;
• ✓trial rules;
• ✓scoring method;
• ✓and population.

A commonly cited range for adults in traditional Corsi-like tasks is often around five to six locations, but that figure should not be used as a direct norm for this website.

Why not?

This game differs from standardized Corsi procedures.

It uses:

• ✓a regular grid;
• ✓one growing sequence;
• ✓one error to end the session;
• ✓different grid sizes;
• ✓its own timing and visual presentation.

Therefore a browser level of 7, 9, or 12 cannot be converted directly into a clinical percentile.

Why One Error Creates a Noisy Maximum

Traditional span assessments often give more than one trial at a given sequence length.

This reduces the chance that a single lapse defines the entire result.

Your game ends after one failed sequence.

That makes the maximum level exciting but also noisy.

A mistake can happen because of:

• ✓distraction;
• ✓an accidental click;
• ✓one confusing transition;
• ✓loss of order;
• ✓or genuine memory overload.

If you want a useful personal baseline, take several attempts on separate occasions and look for the level you can reach consistently.

Chunking and Path Formation

People rarely need to remember every location as an isolated event.

A sequence may be recoded into larger structures.

For example:

• ✓“three tiles around the top corner”;
• ✓“diagonal down, then back left”;
• ✓“small square, then center.”

This is chunking.

You are transforming several individual locations into a smaller number of meaningful spatial patterns.

Path imagery can also help because the sequence becomes a movement through space rather than a disconnected list of flashes.

These strategies can improve performance without changing the physical test.

Does Chunking Mean the Score Is Fake?

No.

Strategy is part of human memory performance.

But strategy affects what a score means.

Someone using elaborate path chunks is not necessarily displaying a larger raw storage capacity than someone using no strategy.

They may be representing the same sequence more efficiently.

That is why memory-span scores should not be interpreted as literal numbers of independent “slots” in the brain.

Sequence Memory vs. Visual Memory

These two tests are especially easy to confuse.

Sequence Memory

Tiles flash one at a time.

Order matters.

Visual Memory

Several tiles light up as a set.

Order does not matter.

One stresses spatial sequence.

The other stresses simultaneous spatial-pattern memory.

That difference is scientifically meaningful.

What Is a Good Sequence Memory Score?

Without validated normative data from this exact implementation, there is no scientifically justified universal cutoff.

Avoid labels such as:

• ✓7–9 = average;
• ✓10+ = elite;
• ✓5 = poor.

The score is affected by the grid, timing, sequence generation, stopping rule, strategy, and practice.

Use the same mode and compare yourself with your own repeated baseline.

Frequently Asked Questions

Remember the Path, Not Just the Squares

At short levels, you can store each flash almost independently.

As the sequence grows, organization becomes increasingly useful.

Turn isolated positions into:

paths, corners, shapes, and chunks.

That is the central challenge of spatial sequence memory: preserving not only where the information appeared, but the exact order in which the locations unfolded.