Quiga Brain (IQ Test)

Activate your brain with matrix reasoning, spatial rotation, and number patterns.

We show you both your result and your accuracy, free.

There's no time limit. How long you take doesn't affect your score.

Stimulus images: Ganis, G. & Kievit, R. A. (2015), "A New Set of Three-Dimensional Shapes for Investigating Mental Rotation Processes", Journal of Open Psychology Data — CC BY 4.0

What does it measure?

We measure three areas separately and show you which one took the lead today.

Matrix Reasoning

The ability to find a shared rule across several pieces. It's what you use to spot patterns in material you've never seen before.

Spatial Rotation

The ability to turn shapes around in your head. It comes in handy for finding your way, reading floor plans or arranging things.

Number Patterns

The ability to read the rule behind a flow of numbers. It's what you use to predict change and guess what comes next.

What kinds of questions are there?

You pick each answer from six options, and you can use the number keys too.

Fill in the blank

Pictures are laid out on a grid by a rule, and you fill in the one empty square. Work out what changes across each row and down each column, and the answer appears.

Find the rotated shape

You first see a 3D shape, then pick the option that is the same shape turned around. The key is telling a rotation apart from a mirror image.

Pick the next number

Find the rule in a row of numbers and choose the one that belongs where the question mark is. Some use only addition, others mix in multiplication.

What's in the result?

Estimated IQ

A value converted using the difficulty design of existing IQ tests. It doesn't replace a standardized test, and it can vary with your condition and environment.

Accuracy

A plain measure of how you answered this time. We show your overall accuracy and the accuracy for each of the three areas.

Brain Activity Map

A three-point chart that sketches today's shape at a glance. Each area comes with a short note on what stood out.

My History

Take it again on the same device and you'll see how much you've changed since last time. Your history stays on this device and is never sent to our servers.

How to read the bars for each area

Each area is shown in one of five zones. The length of the bar is the share of correct answers this time.

Starting ZoneWhere breaking things into steps makes it easier
Rising ZoneWhere the rule shows up as you check the clues one by one
Steady ZoneWhere you stay calm even when two or three things overlap
Strong ZoneWhere you quickly spot what tangled material has in common
Peak ZoneWhere the more complex it gets, the clearer it looks

Good to know before you start

There's no time limit

Rushing can make you miss ones you could solve. Time taken isn't part of the score, so go at your own pace. It's fine to change answers or move back and forth between questions.

How the questions were made

We created the matrix and number pattern questions ourselves. The 3D shapes for spatial rotation come from openly published research material (Ganis & Kievit, 2015 · CC BY 4.0).

Please enjoy it as entertainment

This isn't a clinical diagnosis, and it isn't a tool for school or hiring decisions. We don't ask you to log in or share personal information, and you see your full result for free.

Here is how a result comes out

Which area took the lead today changes the whole feel of your result page.

A day the matrix led

A day when the rules showed themselves. It means you caught how things change across the rows and down the columns even on a grid you had never seen, and the matrix point on the brain activity map stretches outward.

A day rotation led

A day when shapes turned smoothly in your head. It means you told a rotation apart from a mirror image well, and the spatial point on the map comes forward.

A day number patterns led

A day when the flow of numbers read easily. It means you judged the next number well even where addition and multiplication were mixed together, and the number point on the map stands out.

A day all three were even

A day that did not tip one way. The map is drawn close to an equilateral triangle, and the notes lean toward balance. Three areas coming out even is a shape of its own.

Frequently asked questions

How is the estimated IQ calculated?

Every question has a designed difficulty, and how far up that difficulty you answered correctly is converted against the difficulty standards of existing IQ tests. It is not a value compared with a standardization sample, so it is not the same as an official test score.

Does the result differ by course?

All three courses look at all three areas. The more questions a course has, the steadier each area's accuracy becomes and the clearer the bar zones read. Quick is a warm-up; Deep is the unhurried dive.

Am I compared with other people?

Your result is calculated from your own answers alone. We do not line you up against anyone else's score, and we produce no rank and no percentile. Take it again on the same device and we show you only what changed since last time.

What condition is best for taking it?

Well rested and somewhere quiet is when your real shape comes through. A result from when you were tired or in a hurry carries a lot of that day's condition. Your result page also carries a line about your brain condition that day.

Frequently asked

Is it really free?

Yes. Everything is free — no payment, and no paid detailed report.

Do I need to log in or sign up?

No. We never ask for an account or an email. Open the page and start right there.

Are my results stored on a server?

No. Results live only inside the share link. Nothing is kept on a server, and we collect no personal data.

Is this a psychological test or a diagnosis?

No. It is entertainment content. It is not a medical or psychological diagnosis and does not replace professional counselling.

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