Switch the Rule

◈ E2 · Conditional

Evidence for: trained switching tasks

How to play

Switch the Rule

A digit appears with a rule above it. ODD / EVEN: odd → left (F), even → right (J). LESS / MORE than 5: less → left (F), more → right (J). The rule changes now and then — watch the cue.

This is a practice exercise, not a medical test. Response times in a browser are only comparable with yourself on the same device.

What does this train?

Part of the method Attention Switching. On the web you answer for real, so we can measure accuracy and response time. A YouTube video can only ask you to score yourself.

Reading your results

Compared with yourself: personal best and your recent sessions. We never rank you against “the population” or convert scores into IQ.