كل ما تتزنق .. إكذب | Inhibitory Spillover effect - YouTube

Hello again in a new episode of knowledge capsule. Today is the 1st of April which means April fools day.

how did this tradition start? and why do we lie. and is it true that when you want to urinate, you would be a better liar?

There are some explanations about the beginnings of this tradition. some sources say it's related to the Hilaria celebration in ancient rome.

But there is another theory, that it began in France in 1582, during which the French started to use the Gregorian calendar

not all people knew about the change, so there were some, who kept on celebrating the new years on March not on January.

So others used to stick a drawing of a fish on their backs :D and call him "poisson d'avril"

because he is celebrating on a different day

But the celebration in today's form began in England in the 1700's. in which the 1st of April became a traditional day to lie and make fun of your friends.

All of that brings us to another question ... why we lie ?! let us answer this question by asking other questions. are humans the only creatures who lie?

Simply the answer is NO, there are other animals that can lie, like monkeys and Gorillas. a famous example is koko the gorilla.

When they asked her, who broke the water sink. she pointed to the cat that she is raising.

But not all animals can lie either, for example lizards or reptiles in general can't lie.

That's because the brain area responsible for the ability to lie and deceive is missing in their brains most mammals.

When do humans start lying? Human start to lie almost at the age of 2. for example when they fake cry for attention

But when he gets older, he becomes a better liar by denying and blaming other for things he has done.

until he ends up lying professionally in his life, and share fake news on social media

or you marry a woman, who says she doesnt like lying and yet she puts on so much makeup

and it ends up with so many politicians who ruin our lives by their lying

Now let's know some Information about the brain and the link between it and lying.

First you should know that lies take more effort than just telling the truth, brain wise.

Which means, when you ask someone what he was doing yesterday and he told you the truth, it would come out so easily

but if he is lying. It would take a lot of effort from him to prevent himself from saying the truth and also to create another logical story to tell you.

scientists find out that there are 2 spots in the brain are active when humans lie. These are the Prefrontal Cortex and the ACC.

the Prefrontal Cortex is responsible for manipulation of information and choosing proper answers and prevent improper answers as well.

The ACC is responsible for noticing any mistakes or contradicting information that has been told. So telling lies isn't that easy to the brain.

so as you can see it is not easy to lie

as he could easily spill his beans and say the truth

based on these results, in 2015 scientists published a study about "if you want to urinate, would it be easier for you to lie? or not?"

They studied the "Inhibitory Spillover Effect", which is "if you do 2 things simultaneously, and the common factor between them is self control. Each one of them will support positively the other.

So if your bladder is full, during that time you can do anything that needs self control not only lying in a better way.

In 2011 scientists studied two groups. The 1st group were people who had a full bladder, the other didnt

They offered either to give them 16 Euros after 1 day or 35 Euros after 35 days.

They found that people with full bladders chose to get the 35 Euros after 35 days, which shows, that they have patient and can control themselves well.

Unlike the others, who choose to have the money tomorrow rather than waiting 35 days.

that is why in a 2015 study scientists found out that people, who want to urinate, can prevent themselves from telling the truth for a long time unlike others.

they also found out, that when in a state of self control like in this situation, you have a better ability to manipulate information

the results are more than just about wanting to urinate, It's more about the self control and its correlation with the inhibitory spillover effect.