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Task Switch Speed
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Task Switch Speed
The rule alternates every trial. One round: classify by COLOR. Next round: classify by SIZE. Switch as fast as you can.
COLOR RULE
RED → A
BLUE → B
RED → A
BLUE → B
SIZE RULE
BIG → A
SMALL → B
BIG → A
SMALL → B
01 /How to Play
- Two alternating rules appear — follow the rule shown on screen.
- Switch between rules as fast as possible when prompted.
- Your reaction time on switch trials vs. non-switch trials is compared.
- Your switching cost (the delay caused by switching) is your score.
- Lower switching cost = greater cognitive flexibility.
02 /The Science
Task-switching cost — the additional reaction time incurred when switching between tasks compared to repeating the same task — is a reliable measure of cognitive flexibility and executive control. Mediated by the prefrontal cortex and anterior cingulate cortex, task switching requires active inhibition of the previous task set and retrieval of the new one. Switching costs decrease with practice and are larger in older adults, individuals with ADHD, and under cognitive load. The ability to switch rapidly between tasks predicts multitasking performance and professional adaptability.
03 /Pro Tips
- Read the rule cue before the stimulus appears — preparation reduces switching cost.
- Don't carry over the previous rule — fully reset between trials.
- Consistent rhythm helps — irregular pacing increases switching cost.
- Cognitive flexibility improves with dual-task practice and novel learning.
- Switching cost naturally increases with fatigue — test when alert.
Note: This test is designed for entertainment and self-reflection purposes only. Results are based on self-report and are not a substitute for professional psychological evaluation, diagnosis, or treatment. If you have concerns about your mental health, please consult a qualified professional.