9 candidates practising

Multitasking

Hard

CLAN

Colours, Letters & Numbers

Three simple tasks, all at once

CLAN runs three easy tasks at the same time — pressing colour keys as coloured diamonds reach their zones, memorising and matching short letter/number codes, and answering quick mental sums. Each task is trivial on its own; the test is whether you can keep all three going at once.

Please note: RAAF and RNZAF — not part of the current UK CBAT. Retired from the RAF test in 2021 (replaced by FLAG), but the Royal Australian Air Force and the Royal New Zealand Air Force (NZ CBAT, where it's required for pilots) still use it.

Duration

~3 min

Length

3 tasks

Difficulty

Hard

Sign in to start this test.

What to expect

A colours monitor with red, yellow and green diamonds drifting toward matching zones — press the matching colour key as each one arrives.
A letters code to memorise, then four corner options (A–D) to pick it from.
A stream of quick sums with multiple-choice answers, all running while you do the rest.

What it measures

Doing several simple tasks at the same time
Short-term memory under distraction
Quick, accurate mental arithmetic
Staying calm while your attention is split

Instructions

1Choose your three colour keys on the start screen (defaults J / K / L for red / yellow / green).
2Colours: press the matching colour key the moment a diamond reaches its coloured zone.
3Letters: memorise the code shown, then click the corner box (A–D) showing the same code.
4Numbers: click the correct answer to each sum. Keep all three going — you're scored on the total.

Tips

Rest your hand on the colour keys so the colours task never waits for you.
Glance in rotation rather than fixating — a missed diamond costs as much as a wrong sum.
Bank the letters code the instant it appears; it only shows for a few seconds.
Don't panic on a wrong answer — keep the other two tasks moving.

Privacy Policy — CBAT Ready

Last updated: 9 September 2026

This Privacy Policy explains what personal data CBAT Ready ("we", "us") collects, why we collect it, how we use and protect it, and the rights you have. CBAT Ready is operated by Hamilton Technologies. Contact: corri.jones@hamiltontechnologies.co.uk .

1. Who we are

CBAT Ready is operated by Hamilton Technologies, the data controller for the personal data described here.

2. What we collect

Account data — your email address and display name, and the sign-in method you use (Apple, Google or email/password). Passwords are handled by our authentication provider and never stored by us in plain text.
Discord connection data (optional) — if you connect Discord, we receive your Discord username, user ID and avatar, used to show your name and picture on leaderboards.
Practice data — your test results: scores, accuracy, timing, attempts over time and derived statistics.
Usage & device data — pages viewed, features used, browser/device type and log data used to keep the service reliable.
Location data (mobile app only, and only when you use the PJFT run tracker) — when you start a training run in the fitness/PJFT section of our mobile app, we access your device's precise (GPS) location to record your route, distance, pace and time. If you grant background-location permission, we also collect location while the app is in the background or your phone is locked, so the run keeps measuring accurately. We access your location only during a run you have started ; you can deny or revoke the permission at any time in your device settings; and our website never collects location.
Preferences — settings such as your display name, stored locally on your device.

3. How we use your data

To provide the service — run tests, save your scores and show your progress.
To track your PJFT training runs (mobile app) — we use your precise and, with your permission, background location to measure and map your route, distance, pace and time for your training history. We do not use location for advertising and we never sell it.
To operate leaderboards — your display name (and Discord avatar, if connected) may be shown publicly with your ranking.
To generate insights — trends, improvement over time and percentile comparisons.
To improve the product and to keep the service secure — detect misuse, fraud and abuse.

4. Legal bases (UK/EU GDPR)

We rely on performance of a contract, legitimate interests (secure, analyse and improve the service; run leaderboards), and consent (optional integrations such as Discord, location access via your device permission prompt, and any non-essential analytics). You can withdraw consent at any time.

5. Sharing your data

We do not sell your personal data. We share it only with service providers who host and run the platform, with other users (only your public leaderboard name and, if connected, Discord avatar), and with authorities where required by law. We do not share or sell your location data; it stays with the run tracker and your training history.

6. Discord

Connecting Discord is optional; if connected we use your Discord name, ID and avatar to identify you on leaderboards. You can disconnect at any time from your profile.

7. Cookies & local storage

We use cookies and local storage for essential functions and, where enabled, analytics. See our Cookie Policy .

8. Retention

We keep account and practice data while your account is active and for a reasonable period afterwards. Location data is kept with your run history until you delete the run or your account.

9. Security

We use appropriate technical and organisational measures, including encryption in transit and access controls.

10. International transfers

Where providers process data outside the UK/EEA we rely on appropriate safeguards such as adequacy decisions or Standard Contractual Clauses.

11. Your rights

You may access, correct, delete, restrict or object to processing of your data, obtain a portable copy, and withdraw consent. Contact corri.jones@hamiltontechnologies.co.uk . You may also complain to your data protection regulator (in the UK, the ICO).

12. Children

The service is not directed at children under 16 and we do not knowingly collect their data.

13. Changes to this policy

We may update this policy and will change the "last updated" date above.