Working Memory
Sequence Memory Test
Memorize the flashing sequence of tiles, then repeat it back in exact order. Each correct round adds one more step. How far can you go?
Overview & Purpose
Sequence Memory tests your visuospatial working memory — the brain's ability to temporarily hold and manipulate ordered spatial information. Each level adds one more step to the pattern. Average adults reliably reach 7–9 levels, consistent with Miller's Law (7 ± 2 chunks of working memory). Clinical versions of this task (Corsi Block Task) are used to diagnose memory impairments.
Sequence Memory
Remember the sequence of illuminated squares and repeat it in order.
What Sequence Memory Measures
Sequence memory tests your ability to encode and reproduce a growing series of spatial locations in order - A task that relies primarily on the visuospatial sketchpad, one of the two subsidiary systems in Baddeley's working memory model. Unlike verbal digit span, which recruits the phonological loop, sequence memory requires you to mentally map positions in space and replay them without the benefit of subvocal rehearsal.
The task closely parallels the Corsi Block Test, a widely used neuropsychological instrument developed by Philip Corsi in 1972. In the clinical version, an examiner taps blocks on a board in sequence while the patient must reproduce the pattern. It's used to diagnose spatial working memory deficits in conditions ranging from Alzheimer's disease to hippocampal lesions.
Corsi Block Test vs. Digit Span
Although both measure working memory capacity, they tap fundamentally different neural circuits. Most people perform slightly worse on spatial span than verbal span - A gap called the Corsi-digit asymmetry. For a static-pattern variant of this spatial challenge, try Visual Memory.
| Property | Corsi Block / Sequence Memory | Digit Span / Number Memory |
|---|---|---|
| Memory system | Visuospatial sketchpad | Phonological loop |
| Brain regions | Right parietal, hippocampus | Left temporal, Broca's area |
| Adult average span | ~5.0 units | ~7.0 digits |
| Rehearsal strategy | Spatial path visualization | Subvocal repetition |
| Age of peak performance | Early 20s | Mid-20s |
| Training sensitivity | Moderate | High (chunking helps) |
Score Percentile Reference
| Levels Completed | Percentile | Classification |
|---|---|---|
| 1–4 | Bottom 10% | Well below average |
| 5–7 | 10th–40th | Below average |
| 8–10 | 40th–75th | Average |
| 11–13 | 75th–95th | Above average |
| 14+ | Top 5% | Exceptional |
How Sequence Memory Changes With Age
Visuospatial working memory capacity peaks in the early 20s and declines gradually - Earlier and more steeply than verbal memory, which relies on overlearned language systems that remain robust longer.
Frequently Asked Questions (FAQ)
What is a good sequence memory level?
The average adult reaches level 7 or 8. Reaching level 10 or above is considered an excellent score, reflecting strong visuospatial working memory. This perfectly aligns with George Miller's psychological law of "Seven, Plus or Minus Two."
Is sequence memory related to IQ?
Yes, tests of working memory capacity (like sequence memory and digit span) correlate strongly with fluid intelligence (Gf). The ability to hold and manipulate temporary information is a core component of problem-solving and reasoning tasks found on IQ tests.
Why does music training improve sequence memory?
Musicians are trained to chunk sequences of notes and rhythms into meaningful phrases. When confronted with a sequence memory test, musicians often unconsciously map the visual pattern to a rhythm or a spatial "melody," using their highly trained auditory-motor networks to assist their visual memory.
What is the Corsi Block Test?
The Corsi Block-Tapping Test is a standard psychological and clinical assessment created in the 1970s. An examiner taps a sequence of physical wooden blocks, and the patient must repeat the sequence. This game is a digital adaptation of that exact clinical test, measuring the "visuospatial sketchpad" of working memory.
How is sequence memory different from visual memory?
Visual memory (like our other test) requires you to remember *which* squares lit up, regardless of order. Sequence memory requires you to remember the *temporal order* of the squares. It adds a layer of serial processing, making it significantly harder and utilizing slightly different neural pathways.