ConductCognition

Working Memory

Change Detection Test

Estimate visual working-memory capacity with same/change array probes and K-style scoring.

Useful for attention, visual working memory, aging, fatigue, and intervention studies.

Working Memory4-6 minBrowser-based testing workflow
Preview
Cognitive test preview

What this task measures

Estimates visual working-memory capacity with same/change array probes.

Core constructs

  • Visual working memory
  • Change detection
  • Signal detection

Research fit

  • Remote cognitive research batteries
  • Within-study group comparison
  • Longitudinal cognitive outcome tracking
  • Custom researcher-built test batteries

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

Change Detection estimates visual working-memory capacity by presenting brief arrays followed by same/change probes. Scores include hit rate, false-alarm rate, d-prime, and a K-style capacity estimate.

Key scoring outputs

K Capacity Estimate

items

Set-size adjusted visual working-memory estimate.

Higher is better

D-prime

z

Signal-detection discriminability for change trials.

Higher is better

Accuracy

proportion

Overall same/change accuracy.

Higher is better

Research evidence and scoring context

ConductCognition normal-data review packet for this original browser implementation.

Reference reviewedN/A

Ready to Run This Test?

Set up a study, share participant links, collect data, and export results — all in one place. Free to start.

Related task pages

Visual Search TestCorsi Block-Tapping TestMental Rotation

Research FAQ

Common questions about this online cognitive test

Can I run the Change Detection Test online?

Yes. ConductCognition runs the Change Detection Test in a browser-based participant flow with study setup, automated scoring, and export-ready results.

What does this test measure?

Change Detection Test is used for visual working memory, change detection, signal detection 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.