Can I run the 2-Back Task online?
Yes. ConductCognition runs the 2-Back Task in a browser-based participant flow with study setup, automated scoring, and export-ready results.
Working Memory
2-Back Task
Probe higher-load working-memory updating with a browser-native 2-back task suitable for remote studies.
Useful for executive working-memory research, intervention studies, and load-sensitive cognitive batteries.
Working Memory4-5 minBrowser-based testing workflow
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Is this the same as 2 back?
What this task measures
Measures working memory by requiring participants to indicate whether the current stimulus matches the one presented N items ago.
Core constructs
- Working memory updating
- Executive working memory
- Cognitive load management
- Central executive function
Research fit
- Working memory capacity assessment
- Schizophrenia cognitive profiling
- ADHD working memory evaluation
- Cognitive training outcome measurement
- Aging-related working memory decline
Why researchers use ConductCognition
- Hosted browser delivery with no local install burden for participants.
- Study setup, scoring, exports, and participant links in one workflow.
- Transparent pricing instead of opaque enterprise quoting for solo labs.
- Free entry tier plus Academic Pro when you need the full battery and trial-level exports.
Paradigm overview
The 2-Back task increases working memory demand by requiring participants to detect whether the current letter matches the letter shown two positions back. This higher load requires simultaneous maintenance of two recent items, continuous updating as each new stimulus arrives, and comparison against the item two steps back rather than the immediately preceding one.
The 2-Back engages the dorsolateral prefrontal cortex (DLPFC) more strongly than the 1-Back, reflecting the increased executive demands of managing a larger memory buffer. The difference in performance between 1-Back and 2-Back d-prime isolates the cost of increased working memory load, independent of basic sustained attention.
This task is one of the most widely used working memory paradigms in neuroimaging research, with well-established associations to DLPFC activation and sensitivity to working memory deficits across clinical populations.
Key scoring outputs
Overall Accuracy
proportionProportion of all trials correctly classified. Typically lower than 1-Back due to increased demand.
Higher is better
Hits
countNumber of 2-back matches correctly identified.
Higher is better
Misses
countNumber of 2-back matches missed.
Lower is better
False Alarms
countIncorrect responses to non-match stimuli.
Lower is better
Correct Rejections
countNon-match stimuli correctly ignored.
Higher is better
d-Prime
d'Signal detection sensitivity. Primary measure. Expected to be lower than 1-Back d-prime in the same individual.
Higher is better
Hit RT
msAverage reaction time on correct 2-back match detections.
Lower is better
Research evidence and scoring context
Bopp KL, Verhaeghen P (2020). Aging and n-back performance: A meta-analysis. Journals of Gerontology: Psychological Sciences, 75(2):229-240.
Reference reviewed18-79
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Related task pages
Research FAQ
Common questions about this online cognitive test
What does this test measure?
2-Back Task is used for working memory updating, executive working memory, cognitive load management research workflows.
What data can researchers export?
Researchers can export scored results, and paid plans support trial-level exports for deeper analysis.
Is this for clinical diagnosis?
ConductCognition is for research use. The platform supports task delivery, scoring, and exports; clinical interpretation remains outside the platform.