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Task Switch Test

Cognitive Flexibility & Mental Agility
⚡ Quick Start
Watch the task cue at the top of each trial (COLOR or SHAPE), then answer with ← / A or → / D — or tap the Left / Right buttons under the shape
Check the key mappings below — the rules change depending on which task is active
Use the Pause and End Session buttons below the test, or press Space to pause/resume and Esc to end
SHAPE
← A
Circle
→ D
Square / Triangle
Answer with the keyboard or the on-screen Left / Right buttons — works on phone, tablet and desktop.
⚙ Advanced Settings
⌨️ Key Mappings
COLOR Task
A
Blue/Green
D
Red/Yellow
SHAPE Task
A
Circle
D
Square/Triangle
The on-screen Left and Right buttons inside the test use exactly the same mappings, so you can play with a keyboard, a mouse or a touchscreen.
Paused
Press Space or Resume to continue

📊 Session Complete!

Accuracy
0%
Correct
0
Missed
0
Wrong Key
0
Avg RT
0ms
Back to Start
📊 Recent Results
📘 Detailed Instructions
  1. Click Start Test (or press Space) to begin.
  2. On each trial, a cue tells you which task to perform:
    • COLOR: answer Left (← or A) for Blue/Green, Right (→ or D) for Red/Yellow
    • SHAPE: answer Left (← or A) for Circle, Right (→ or D) for Square/Triangle
  3. On a phone or tablet, tap the Left or Right button directly under the shape. The buttons carry both rules, so the cue still tells you which one applies.
  4. The task switches randomly throughout the session based on your switch rate setting.
  5. Respond as quickly and accurately as possible before the stimulus disappears.
  6. Press Space to pause/resume, or Esc to end the session. On touch devices use the Pause and End Session buttons below the test.
  7. The current trial is frozen while a confirmation is on screen, so cancelling End Session gives you the remaining response time back and never counts the dialog against your reaction time.
  8. The test measures your cognitive flexibility and switching cost (difference between repeat vs switch trials).
🚀

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