Tap MATCH (or Space) if the cell is the same as two-back. Otherwise wait. About 24 trials after a short warm-up.
How it works
Tap MATCH (or Space) if the cell is the same as two-back. Otherwise wait. About 24 trials after a short warm-up. N-back papers specify n, timing and scoring. This 3×3 original is not a working-memory IQ.
📍 Spatial 2-Back Lite — Grid Position Only🔁 N-Back Test (Working Memory Updating)2️⃣ Visual 2-Back Lite — Letter Identity2️⃣ Letter 2-Back Lite — Same Letter Two Back?
❓ FAQ
Same as spatial-2back or letter-2back?Those URLs exist. This page is a 3×3 cell, n=2, original stream.
Does training this raise IQ?Near transfer to this toy is expected. Far transfer to IQ is not a claim we make.
Is Space required?Click also works. Input method is another reason scores are not clinical.
📅 Last updated: 2026-08-27 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology