Common Mistakes and a Test-Day Checklist

The mistakes below are common across timed aptitude tests, and none of them requires special talent to fix. They come from how people behave under time pressure. Recognising them in advance is half the cure. After the list you will find a checklist you can print or copy, covering the day before, the hour before and the test itself.

Ten common mistakes

1. Not reading the instructions

Instruction screens look boring, so people click through them. They often contain the details that matter: whether wrong answers count, whether you can go back, how long you have, and what the sample question shows. Spend the time. It is one of the only moments in the test that is not on the clock, if the format gives you one.

2. Trying to finish everything

Aptitude tests are generally built so that most people cannot finish. Trying to answer every question at all costs leads to careless errors and panic. The better aim is accurate answers on as many items as you reach. See the time-pressure guide.

3. Spending too long on one hard item

A question you cannot solve is worth the same as one you can. Give hard items a short budget, then guess and move on.

4. Mixing up rotation and mirroring

In spatial questions, a flipped shape is a classic wrong option. If you rely on a quick feel for whether a shape "looks the same", you will get caught. Use the order check described in the rotation versus mirroring guide.

5. Looking at answer options too early

In reasoning and word items, options are designed to look right. Predict first, then match. This habit is explained in the reasoning guide.

6. Misreading the operation or the question type

Sums that switch between adding and subtracting, and word items that switch between same and opposite, catch people on autopilot. A half-second look at the sign or the instruction word prevents most of these.

7. Going so fast that accuracy collapses

Speed that produces wrong answers is wasted. Find the pace at which your errors are nearly zero, then edge up from there. The perceptual speed guide and number guide describe how.

8. Practising only your strengths

It is more pleasant to practise what you are good at. It is more useful to spend most of your time on the weakest area, within reason. A simple audit on day one of the seven-day plan tells you where.

9. Cramming and sleeping badly

A late night of practice usually loses more than it gains, because attention and processing speed fall when you are tired. Rest the night before.

10. Treating the score as a verdict

A single test result is a snapshot. It is not a statement of your ability or your worth, and employers use it in different ways. See understanding GIA results.

Test-day checklist

Use this as a template and adjust it to your invitation. Anything that depends on your employer's instructions is marked as such.

The day before

• Re-read the invitation: date, time, time zone, link, and any technical requirements.
• Check what is allowed: paper, pen, calculator. Do not assume.
• Test your device, browser, internet connection and charger, in the same place you will sit the test.
• Do a short, easy warm-up set only. No new material.
• Choose a quiet space and tell people who share it when you need it silent.
• Set an alarm, prepare a drink of water, and go to bed at a normal time.

The hour before

• Eat something light and have water nearby.
• Use the bathroom, silence your phone and close other apps and tabs.
• Put out paper and pencil if allowed, and make sure you have a clock or timer if the screen does not show one.
• Log in a few minutes early so that technical problems do not eat into your focus.
• Do a minute of slow breathing, with a longer exhale than inhale.

During the test

• Read each instruction screen fully, including the sample question.
• Answer easy items fast, give hard ones a short budget, and guess in line with the rules.
• If you blank on an item, skip it and answer the next one, because a quick win restores rhythm.
• Between sections, take one slow breath and reset. Each section is a fresh start.
• If something technical goes wrong, such as a freeze or disconnection, stay calm and follow the on-screen instructions. Tell the recruiter afterwards and explain what happened.

Afterwards

• Write down what felt hard, while you remember it. It helps if you take a similar test in future.
• Resist replaying individual questions. You cannot change them.
• If you have questions about results or how they will be used, ask the recruiter.

If your nerves are severe

Some nervousness is normal and can help focus. If anxiety is strong enough to interfere with your sleep or your ability to think, or if you have a condition that affects how you take timed tests, raise it with the employer before the test. Many employers offer adjustments, such as extra time, on request, though what is available differs. Asking in advance is generally better than asking afterwards. We cannot assess individual circumstances, and a health professional is the right person for medical advice.

A last reminder

You do not need to be perfect. You need to be steady: read the instructions, work the method you practised, guess sensibly, and let the clock run without fighting it. If you do that, you will have given an honest account of what you can do.

Frequently asked questions

Can I bring notes into the test?

Do not, unless your instructions clearly allow it. Assume that you work from your own head, with only the materials explicitly permitted.

What if my internet drops?

Follow any on-screen instructions, reconnect if you can, and contact the sender as soon as possible with a brief note of what happened. Rules differ and we cannot say what the outcome would be.

Should I have caffeine?

Only if it is part of your normal routine. A change in routine on the day can make you jittery, so keep to what you know.

How early should I log in?

A few minutes early is enough to catch technical issues without waiting around and building nerves.