Cognitive abilities are skills that our brain processes to find answers for every single task, from the simplest to the most complex ones. They are related to our principles of dealing with problems, finding solutions, and the ability to learn new things.
For example, answering the doorbell involves a couple of them:
perception (hearing the doorbell ring);
decision making (to decide whether we answer the door or not);
motor skill (unlocking and opening the door);
language skills (talking and understanding language);
social skills (interpreting tone of voice and interacting properly with another human being).
Cognition has a colossal impact on how we understand our surroundings and act in them.
How It Is Done?

Our cognitive skills and abilities are supported by specific neuronal networks located in our brain.
Did you know that memory skills rely on some parts of the temporal lobes and parts of the frontal lobes? Yes, all of our memories are located behind our forehead.
Every skill has its center. And this is why traumatic head injuries can affect lower cognitive ability sometimes.
Enough with the blabber - let's get to the fun part!
Brain Exercises
Our cognitive abilities peak during our twenties, but that doesn't mean that we shouldn't sharpen our minds from time to time.
Regular exercise helps us stay in good shape, and this fact applies to all the organs in our bodies, including our brains.
Are your reflexes sharp enough to detect the tiniest flaws? How quickly can your eyes detect differences? This quiz is a perfect opportunity to test your skills by answering a simple question:
Can you find the hidden letter in this picture full of 'Y's?
Find The Hidden Letter
At first glance, this picture looks like a pattern filled with colorful 'Y's.
But, believe it or not - there are two hidden letters in there.
Grab your timer and see how long you need to find the hidden letters in the picture below.

If you can find one letter in under 20 seconds, then you have some sharp eyes indeed.
Wondering what happens if you can find both? Well, you should feel free to start bragging about it.
A Second Chance For A Glance
Which letter did you find first?
Here's a hint: somewhere around all those piles of Y letters, there are an 'X' and a 'T'.
Take another glance and see if you can find both of them. If you can't find either, give it another shot now that you know what you're looking for.

Still no answers? Scroll down to find out what you need.
Revealing The Answer
In case you missed the spots, here is the answer that you needed.

If you scroll back, there is no doubt that you will start noticing them now.