Test № 03 · Working Memory
Three subtests. Ten minutes.
After classical paradigms — forward digit span, backward digit span, and Corsi block-tapping. Each measures a different aspect of the cognitive system that holds and manipulates information across seconds.
What this measures
- Forward digit span — phonological loop capacity
- Backward digit span — central executive (manipulation)
- Spatial span (Corsi) — visuospatial sketchpad
How it works
- A sequence is shown one element at a time.
- After the sequence ends, reproduce it.
- Sequences grow longer until you make 2 mistakes in a row.
- Find a quiet spot — distractions wreck working memory.
Subtest 1 of 3
Forward Digit Span
A sequence of digits will appear, one at a time. After the sequence ends, type the digits in the same order.
Ready...
Watch the sequence
Test Complete
Your result.
Three subtests of the working memory system.
Composite Span
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Forward Digit Span
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Backward Digit Span
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Spatial Span (Corsi)
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What these numbers mean
About this score
Span measures the longest sequence you can reliably reproduce. Average adults score 7±2 on forward digit span, 5±2 on backward digit span, and 5±1 on spatial span. This is not an IQ test — the main 40-item test returns an estimated IQ score.