Tap how many dots (1–6). A letter follows. At the end, type the letter string. Two misses at a length ends the run.
How it works
Tap how many dots (1–6). A letter follows. At the end, type the letter string. Two misses at a length ends the run. Lab counting span is timed and scored under rules. This browser mix is practice, not a clinical IQ.
➕ Operation Span Lite — Maths, Then Letters📖 Reading Span Lite — Sense Check, Then Words🔠 Letter Span Lite — Forward A–Z📌 Keep-Track Lite — Last Item Per Category
❓ FAQ
Is this a reading-span clone?No. Reading-span lite is another URL. Here the distractor is a count.
Can I skip counting?You can, and the toy still is not an IQ. The point of the paradigm is the dual load.
Is a long letter string high IQ?No. Familiarity and guessing inflate tiny web sets.
📅 Last updated: 2026-08-27 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology