🧠 Free test

🔀 Rule-Switch Letter Lite — Vowel Then Consonant

A cue says vowel or consonant; tap yes/no for the letter. The rule switches. Original switch toy — not a clinical set-shift IQ.

IQ TestBrain Tests & Games › Rule-Switch Letter Lite — Vowel Then Consonant
VOWEL: tap Yes if A E I O U. CONSONANT: tap Yes if it is not a vowel. About 24 trials. Cue may change.
How it works

VOWEL: tap Yes if A E I O U. CONSONANT: tap Yes if it is not a vowel. About 24 trials. Cue may change. Switching batteries have cuing intervals and norms. This letter mapping is not a flexibility IQ.

🔀 Task-Switch Lite — Letter/Number Rule🔀 Odd–Even Switch Lite — Number Rule Only🃏 Card Sort Lite — Hidden Rule That Shifts🅱️ Trail-Making B Lite — Number Then Letter

❓ FAQ

Same as task-switch lite?Related family, different URL and mapping.
Is a switch cost my IQ?No. Device lag often exceeds the effect. Not a clinical IQ.
Does perseveration mean injury?Never from this toy. Missed cues happen.
🧠 Free test
📅 Last updated: 2026-08-27 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology
📚 Sources & references
← IQ Test