Working Memory3–5 minBurden: HighEMA: Baseline / infrequent

Symmetry Span

A complex-span task combining symmetry judgments with spatial memory recall.

Working-memory capacityExecutive working memory
Category
Working Memory
Typical duration
3–5 min
Participant burden
High
EMA suitability
Baseline / infrequent

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Configure parameters and run an interactive preview exactly as participants will experience it. No data is recorded.

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Include practice trials

Shown with feedback before the main task

Task parameters

Sets run from size 2 up to this maximum (two sets per size).

Practice always runs 2 sets of size 2. Outputs: recall accuracy, processing accuracy, longest correct set (span score).

3–5 minBurden: HighEMA: Baseline / infrequent

This is a researcher preview. No participant data is recorded.

Simulated participant view

9:41

Symmetry Span

A complex-span task combining symmetry judgments with spatial memory recall.

No data is recorded

Participant experience on smartphone

Participants judge symmetry and then remember locations before recalling them in sequence.

When to use

Useful when a study needs stronger capacity-style working-memory measures rather than simple storage alone.

When not to use

Not suitable for low-burden or high-frequency research workflows.

How to use in a study

Reuse the same interaction model as rotation span where possible to keep the library internally consistent.

Researcher-configurable parameters

  • Set length progression
  • Symmetry item pool
  • Recall mode
  • Practice enabled / disabled

Outputs collected

  • Longest correct set
  • Location recall accuracy
  • Symmetry accuracy
  • Combined score

Interpretation notes

Best implemented as an advanced optional module for focused cognitive research.

Scientific evidence

  • Symmetry span is supported in ultra-brief smartphone work as a mobile working-memory capacity measure.

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