Brain Tests & Experiments

Below you find a number of words written in different colors. Try to name the colors you see as fast as possible. This means that you should say the names of the colors in which the words are written, and not read the words themselves.

You probably noticed that it is rather tough to say the names of the colors very fast, since your brain is also reading the text, which is almost unavoidable...

Look at the image below.

We offer you a unique optical illusion! To do this optical experiment, you should first download the following MS-Windows animation: optical.exe (22 Kbytes).

After downloading it, you can start the animation on your own PC. When the animation is started, you should stare at its center for about 30 seconds. Then look at the back of your hand, which is on your mouse!

Is the center square of stars standing still or moving?

Your brain thinks it is moving, but in reality it is standing still!

Is the left center circle larger than the right center circle in the image below?

No, this is an optical illusion: both center circles have the same size.

Are the horizontal lines parallel or are they slanting or curved in the image below?

The horizontal lines are exactly straight and parallel!

What do you see in the image below?

You can see both an indian and an Eskimo in the image. It is an indian face that looks to the left, or an Eskimo who stands for a black hole.

How may legs does this elephant have?

The elephant has been drawn in such a way that the number of legs cannot be counted...

What do you see in the image below?

You can see both a woman's face and a man with a saxophone in the image.

What do you see in the image below?

You can see both a rabbit's head and a duck's head in the image. The beak of the duck forms the ears of the rabbit.

Imagine that you are at the place of the arrow and start walking...

The stairs are drawn in such a way, that they look like continuous ascending or descending stairs.

What do you see in the image below?

You can see both a girl and an old woman in the image. The ear of the girl is the eye of the woman and the necklace of the girl is the mouth of the woman.

What do you see in the image below?

You can see both a skull and a woman in front of a mirror in the image.

Test your knowledge of men's room etiquette! To perform this test, you should download the following MS-Windows MacroMedia Shockwave Flash, made by CleverMedia:

• A zipped version of the program (205 Kbytes)

After downloading it, you can start the urinal game on your own PC. Instead of downloading, you can also play the online version of the urinal game at: The online game at Macromedia Shockrave! (you need a Shockwave Flash plug-in)

Just do it. Don't cheat! Because of you did, this test would be no fun. We promise that there are no tricks to this test.

Read the sentence below:

         FINISHED FILES ARE THE
         RESULT OF YEARS OF SCIENTIFIC
         STUDY COMBINED WITH THE
         EXPERIENCE OF YEARS

Perform the calculation below as fast as you can, and using only mental arithmetic (so without pen and paper, or a calculator!).

We offer you a test to detect the dominant part(s) of your brain! To perform this test, you should first download the following MS-Windows program (note: this program does not work with newer 64-bit systems):

• A zipped version of the program (400 Kbytes)

After downloading it, you can start the brain test on your own PC, and we ensure you that it is worth the effort!