NUMBER N-BACK

Infer the rule.
Remember the pattern.

Each trial presents a complete four-number series. Infer its generating rule internally, then decide only whether that rule matches the rule from n trials ago.

Same hidden rule, different values2, 4, 6, 8Infer the pattern internally11, 13, 15, 17Same pattern → match

1

Infer

Work out the generating rule without entering it.

2

Retain

Remember the abstract rule rather than the surface numbers.

3

Compare

Respond only whether the rule matches n trials back.

SESSION SETTINGS

Set the memory and auditory load

Spoken premises use the same complete four-number series shown visually. Speech speed and automatic response time are controlled independently.

N-back levelHow many trials back the hidden rule comparison reaches. Session lengthChoose a preset, enter a custom total, or continue until you end the session. Spoken premisesSpeak every complete four-number series before its response timer begins. Premise speech speedControls how quickly each number series is spoken. Response time after premiseStarts only after the complete spoken premise finishes, then advances when the interval expires.

Trial 1 / 24

2-backScore —

INFER THE HIDDEN RULE

Infer and retain the pattern internally. Do not enter the missing number or name the rule.

PATTERN N-BACK

Does this rule match the rule from 2 trials ago?

SESSION COMPLETE

Pattern memory measured

0%

TRIAL AUDIT

Every scored trial

LOCAL PROGRESS

Completed sessions

Progress records only abstract pattern n-back accuracy.