Respond to visual shapes (press Z for ●) and audio tones (press V for high beep). Ignore other stimuli. Sometimes both appear at once - press both keys!
First, test audio above ↑ Then click here to start
● = ZHigh tone = VPress both if both appear!
Session Summary
Recent Results
How to Use (click to expand)
⚠️ Requirements:
Keyboard required - This test uses Z and V keys (not mobile-friendly)
Audio required - Use headphones or speakers to hear beep tones
Must test audio first - Click "Test Audio First" button before starting
Click "Test Audio First" button to verify audio works (required before starting).
Click/tap the test area to begin.
A countdown (3, 2, 1) will appear before the test starts.
Visual task: When you see a circle (●), press the Z key. Ignore squares (■) and triangles (▲).
Audio task: When you hear a high-pitched beep, press the V key. Ignore low-pitched beeps.
Important: Sometimes both stimuli appear at once - you must press both Z and V to get full credit!
Press Esc to pause/resume at any time.
The test measures your ability to divide attention between two tasks.
Results show Hit rate, Miss rate, False Alarm rate, and reaction times for each task type.
This skill is essential for real-world situations requiring divided attention (driving, sports, work).